I just installed spitfire tuning tuner to my 1998 Lexus GS 400 and a k&n intake and black hart racing breaks and sway bars ! Just from the spitfire tuning already tuned to stage 2 I gained 88 hp and 46 torque. The next thing is getting is exhaust system tho should be sweet
I agree with some of the others. About 10yrs ago I had the Apexi Neo with a Boomslang harness on my car. I also had S&S headers, K&N FIPK and Borla exhaust. I pushed 13.0 - 13.1 AFRs and had 276WHP on a dyno dynamics dyno (not a mustang dyno that over-inflates numbers). The car was very quick as I also had a high stall TC and 3.73 Supra LSD. So don’t be afraid to go 13.1 AFR on an all motor GS, it’s not too lean in open loop (hitting throttle). Of course, I sold the Neo and harness to someone on Club Lexus when I got my SRT stage 3 SC. Now that’s fun! But was a tuning nightmare with laptop. Good to go now though.
Thank you for sharing your experiences with us. I’m not trying to argue, but let’s just say the tuner started bringing your AFR down until power started dropping off. Then you’d have the same power increase at a safer AFR. Just food for thought. Again, thanks!
I've got my AFR for WOT at around 11.5 +/-, sites have said around this is 'best rich torque at wide open throttle' would this be suitable/safe for these cars or should I aim for 12.2 +/- which is 'Safe best power at wide open throttle, thanks. (Year old comment, I know).
Love the old schoo afc tuning.. haha thats how i did my turbo sentra. Now i got a 300hp sentra . Proble with safc is it is real hard to have a nice idle, you got to compromise somewere
Thanks. Funny enough, my idle is perfect. At cold start it’s in open loop, so I just left the low rpms zeroed out. Then it kicks over to closed loop at idle and the SAFC doesn’t do anything at idle anyway. So it works out well for me.
Thank you for doing videos like this! Anyway, I was wondering if your ecu has adapted and readjusted itself to stock afr values during high throttle. I understand that during closed loop or low throttle it will relearn, but what about high throttle? Just wanna ask from someone who has personally done it. I have been reading up on this and there are lots of people who love it and hate it. Thanks!
Hi - in open loop my ECU has NOT over-ridden the piggyback AFR effects. I know people claim that happens but I’m here to tell you it’s false. Yes, in closed loop (low map) the ECU will just fight to hit 14.7, and that I can confirm. But in open loop my AFRs have held to my targets. The exception is major changes in weather, where I’ll see the AFR move a little, but I’m talking .1-.2 in value. I can tell you with 100% certainly that open loop AFR values remain constant and consistent.
@@ForwardMomentum Thanks for the response! I plan on doing this to my 1uz Supra using an sc400 non vvti ecu. Despite being different ecus I am sure I will get similar results to you! Hope to see a dyno vid soon.
@@samjonas875 sounds great. I’m not going to waste $250 getting a dyno tune. My car is definitely in the standard range with these mods because my 0-60 confirms it pretty well. With a good launch I can hit 5.1-5.2 pretty consistently which probably equates to 245-255whp. Kind of sad compared to today’s standards, but decent for a 23 year-old car. I’m really starting to think about a manual swap...
@@ForwardMomentum I've seen sc400 guys gain some whp from a manual swap. Don't how much of a difference it makes on the butt dyno, but the fun factor definitely goes up.
@@samjonas875 exactly. I actually did the Soarer BFI and I know they picked up a few HP with that intake as well. I’ll have an episode eventually on it.
Sorry, I have not dyno'd the car yet so I do not have numbers for you. A healthy GS400 with mild mods and a proper tune should be in the 260-270whp range.
Btw if u are NA engine AFR 13-13.5 is good enough, 12 sth is also fine and can cooler the engine if u push the car hard for very long time, continous climb hill or circuit time attack sth if always run at 12 sth carbon will build quicker also waste of fuel
U just got another subscriber mate) got my GS400 about year ago, currently swapping a 5sp manual in it what're the results of putting in AFC? (did u dyno it after the installation and tuning?) cheers
Awesome! The auto trans kills these the power potential. It’s so “cushy.” A 5spd manual would be amazing. Are you getting parts from XAT? I have not dyno’d it yet for a few reasons. 1) my AFR meter is giving me great feedback. 2) I really felt a bump in the midrange. Passing power and TQ seems to be way up. 3) a dyno session is $250. All that being said I certainly may do it in the future. It’s always in the back of my mind. More to come! Cheers
@@ForwardMomentum It's going to be a Getrag from e34 M5. XAT is very expensive, I've got conv. plate for 120$, flywheel for 150$ and gearbox for another 200$. XAT flywheel costs around 700$ o0. I'm making the photos of every step so later on will upload on clublexus (nice forum tho). Dyno in my city costs 50 per run=(
@@ForwardMomentum you may also make video for subs about how to connect trans oil cooler (easy operation for 5min job) but it saves transmission a lot from overheating. Hayden makes cheap and nice oil coolers
@@ForwardMomentum no, don't have an IG account. I'm gonna spend all my money if I'll be looking for those nice pics from IG all day long))) keeping financial distance lol One of my buddies is building GS430 with twin-turbo so I'm trying to safe some money on that idea too)
I bought an 01' gs300 w/183k for 1700$. Got it a few months ago. I had to do maintenance but now the car runs smooth and strong. I hope to het at least 300k miles with it. Do you think thats a probability?
Hi,thank you for your videos. My question is you said you immediately started adding fuel, but the A/F said rich , you haha even said it was too rich . So on the A/FC did you mean you pulled fuel to lean out from your 12.3 to 12.7. Just trying to figure out how to operate it and if it is worth doing to my modified is300. You are very thorough with your explanations. thank you
Thanks for commenting. I went back through the video and I was unable to piece together where I may have contradicted myself or misspoke per your comment. Nonetheless, to pull fuel you have a lesser values on the NEO maps (you're correct). Funny enough since I shot this vid K&N took back the FIPK and gave me a FULL REFUND. When I went back to the stock intake system my car runs SO MUCH BETTER. Now my tune is all negative numbers. I'm pulling nearly 12% in places. I probably need to do another street tune episode as I no longer recommend aftermarket intakes on these cars. The stock system is superior. I love having the NEO for tuning and tweaking and now that I am manual I can easily tune the low rpms (previously I could not). LMK if you have other questions!
On the is350, the ECU will re-learn the adjustments and all gains will be lost. Clublexus members have reported the ECU compensates and they have to be resetting the Apexi every hundred miles/weeks or so. I wonder if the same thing happens with yours.
Interesting considering open loop is a fixed value. The NEO simply shoves the ECU to a different fuel value in the matrix table. The ECU doesn’t learn anything in open loop - it just reacts. I’d love to see AFR data logging from the IS350 guys showing the ECU is reverting. My NEO and impact on AFRs has never budged unless I did a significant mod or the weather changed drastically, and even then the changes were slight.
i'm driving corolla AE100 with SAFC2 and AEM wideband, yes the ECU will try hard to compensate back to AFR 14.8 but the adjustment of ECU has it's limit so u need to go on drive and adjust untill the ecu cannot compensate anymore, then it will be the final data u need for your car. but it has an drawback, when u disconnect battary or reset ECU it takes time for ECU to reach it's compensate limit
Again, I’m talking open loop. The ECU never fights for 14.7 in open loop. It only fights for it in closed loop. I recently discovered that the NEO will work in closed loop as well, in regards to fuel trims. So on the low maps I can adjust the values and see it in the trims. And yes, it holds. Point taken about resets though. I have noticed that it takes a bit for the ECU to get back to where it was after a reset. Of course values in the NEO remain the same.
Hello brother, this is Moe! I was wondering if you could tell me exactly how much horsepower you gained from the apexi neo. Seriously considering it fir my bone stock 98 GS400. Thanks in advance!
Sorry, I never dyno’d it due to the ridiculous cost of sessions around here. I would estimate 10-15whp midrange and a little lower elsewhere. You have to have a way to street or dyno tune it to do it right though.
Couple of quick questions. I put a neo in my IS300 tonight and still a bit unsure. Did you change any of the fuel map settings before driving or does leaving it at 0 leave it at the stock factory map? Also did you mess with the setting where it changes what throttle % for high and low map settings?
I left mine zeroed out and tuned from there. The %’s don’t matter much because we’re only dealing with open loop tuning, which is usually around a 70-100% load factor. One thing to keep in mind is that your car will start cold in open loop. So your first couple high map settings (mine are 1900 and 2200) can effect how the car runs at start-up. So I leave those zeroed. My low throttle is 15% and hi is 70%. I progressively pull full from 2500-6500, from -6%- -12% to hit 12.5AFR. Just so you have a reference. Hope that helps!
4WD ADDICT not sure. I ordered a TTE rep front lip instead of a dyno session :). I know, let the flaming begin. LOL. Seriously though, street tuning works pretty well; I can really feel the difference.
@@ForwardMomentum Great choice by the way! too bad they still dont make the real lips and a bunch of other parts and accessories that they used to for the GS. It's a real shame
It’s never plug n play. It always requires a custom harness or direct wiring, as noted in my install video. Apexi has a huge db of wiring schematics to look at.
Would running 11.5 +/- be safe for these motors, that's what I'm currently running and it feels great but would rather have reliability than extreme power. Thanks.
I don’t know what engine you have, but you can get a few HP on the V8 models. The 2JZ is probably a waste of money. If you have a 430 (3UZ) you can get the ECU modded by Quantum Auto. Just do that.
I mean I answered the question in the video. You get some midrange HP, but the real reason to have it is so you can adjust fuel as you add mods to the car.
I can’t answer for Kali, but yes, for sure. You only tune open loop and as long as the car doesn’t go on a roller where they test open loop and you over fuel it, it should be fine.
Definitely want to see a dyno vid to see some real numbers. Not sure I want to modify mine unless I can get at least 25+ whp gain with bolt ons and tune for reasonable $$. My 99 gs4 has been wasting away in my driveway for a year, because I refuse to pay an arm and a leg to have the starter replaced and I haven't had time to do it myself. What a stupid fucking spot to put it. Other than that its been a solid car. Also owned a 98 gs300.
@Forward Momentum, have you found anybody able to tune the 1uz vvti ECU, interested in SC my LS400 and would prefer ECU tuning over a piggy back system. Thank you.
I now have the split second enricher, the apexi AFC neo is now discontinued and ebay prices for used scratched up ones are 300-400. Is there a different piggy back/substitute for the NEO, I looked on split seconds website and they dont have anything to control open loop. Any recommendations would be greatly appreciated. @@ForwardMomentum
Yes, but the tune is whacked. I have only seen it done on other cars though. You can actually get pops on this car with the right exhaust combo due to the cam overlap. When my exhaust was insanely loud I could get a pretty loud few pops after creating back pressure in M mode, then tapping the throttle to go again. I can still do this now, it’s just not as loud. So the answer is yes, but I haven’t done it because I don’t want to drive around with that tune in place.
Hi - It was my initial safety tune. I have since gone to 12.8. After cat AFR results in .1 “lean” indication according to AEM, so what my engine is actually at is 12.7 right now. Dyno tune is on the list, but I’m working on getting headers first. :)
Is there a specific part number for the Apexi Neo? I’ve been looking into getting one for a long time but could never really get a clear answer on the right one for a GS400. Help please lol
It should be. Remember, the PN for the NEO isn’t really the challenge as it’s just a fuel controller; the challenge is ensuring you use the correct wiring diagram when hooking it up to the ECU.
Sounds like you’re interested in fuel and timing options. I believe there are some standalone options, but getting a standalone fully set up was insanely complex, time consuming and expensive. The most affordable method is a piggyback like the NEO; of course that only handles fuel in open loop. Your best bet might be to check with AEM and Perfect Power or similar.
It’s hard for me to answer for you. On a scale of 1-10, 10 being the most difficult, I’d rate this a 5. Requires more thinking than mechanical ability. You got this!
Nope. Each car is different. This AFR yielded the most midrange power on my 1UZ. Your settings and results may vary, but there isn’t one hard and fast rule.
Love what you're doing my friend, keep it up! It's like you're reviving the old useful clublexus threads into a new video format.
98 gs4 myself.
Could not agree more. 03 GS3
Literally the only good source on UA-cam for the gs, just so happens we have the same car, year & color! Can count on me to always be watchin!
Awesome! This color really pops when it’s clean! Thanks for watching!
Amazing video I have 1998 Lexus GS 400 I push about 525 hp and have rims on it lol I need some racing wheels but I do fool a lot of people lol
i hope you keep doing this, just got a GS400 this month. not that many detailed videos out there for this beauty
I know I wish there was a bigger aftermarket for the gs400
I just installed spitfire tuning tuner to my 1998 Lexus GS 400 and a k&n intake and black hart racing breaks and sway bars ! Just from the spitfire tuning already tuned to stage 2 I gained 88 hp and 46 torque. The next thing is getting is exhaust system tho should be sweet
I agree with some of the others. About 10yrs ago I had the Apexi Neo with a Boomslang harness on my car. I also had S&S headers, K&N FIPK and Borla exhaust. I pushed 13.0 - 13.1 AFRs and had 276WHP on a dyno dynamics dyno (not a mustang dyno that over-inflates numbers). The car was very quick as I also had a high stall TC and 3.73 Supra LSD. So don’t be afraid to go 13.1 AFR on an all motor GS, it’s not too lean in open loop (hitting throttle).
Of course, I sold the Neo and harness to someone on Club Lexus when I got my SRT stage 3 SC. Now that’s fun! But was a tuning nightmare with laptop. Good to go now though.
Thank you for sharing your experiences with us. I’m not trying to argue, but let’s just say the tuner started bringing your AFR down until power started dropping off. Then you’d have the same power increase at a safer AFR. Just food for thought. Again, thanks!
I've got my AFR for WOT at around 11.5 +/-, sites have said around this is 'best rich torque at wide open throttle' would this be suitable/safe for these cars or should I aim for 12.2 +/- which is 'Safe best power at wide open throttle, thanks. (Year old comment, I know).
Mustang dynos inflate numbers? DynoJet dynos usually show like 10-20% more hp than mustangs
Yes! Thanks for uploading this Christian, been looking forward to watching this!
Yes! Been waiting for this one
You gotta get that thing Dynoed now! Can't wait for that video
getting my gs 400 tomorrow cant wait to do this awesome vid bud subscribed
Love the old schoo afc tuning.. haha thats how i did my turbo sentra. Now i got a 300hp sentra . Proble with safc is it is real hard to have a nice idle, you got to compromise somewere
Thanks. Funny enough, my idle is perfect. At cold start it’s in open loop, so I just left the low rpms zeroed out. Then it kicks over to closed loop at idle and the SAFC doesn’t do anything at idle anyway. So it works out well for me.
What dash cam are you running? Love the videos by the way keep up the good content!
Thank you! I run a Gitup G3.
Thank you for doing videos like this! Anyway, I was wondering if your ecu has adapted and readjusted itself to stock afr values during high throttle. I understand that during closed loop or low throttle it will relearn, but what about high throttle? Just wanna ask from someone who has personally done it. I have been reading up on this and there are lots of people who love it and hate it. Thanks!
Hi - in open loop my ECU has NOT over-ridden the piggyback AFR effects. I know people claim that happens but I’m here to tell you it’s false. Yes, in closed loop (low map) the ECU will just fight to hit 14.7, and that I can confirm. But in open loop my AFRs have held to my targets. The exception is major changes in weather, where I’ll see the AFR move a little, but I’m talking .1-.2 in value. I can tell you with 100% certainly that open loop AFR values remain constant and consistent.
@@ForwardMomentum Thanks for the response! I plan on doing this to my 1uz Supra using an sc400 non vvti ecu. Despite being different ecus I am sure I will get similar results to you! Hope to see a dyno vid soon.
@@samjonas875 sounds great. I’m not going to waste $250 getting a dyno tune. My car is definitely in the standard range with these mods because my 0-60 confirms it pretty well. With a good launch I can hit 5.1-5.2 pretty consistently which probably equates to 245-255whp. Kind of sad compared to today’s standards, but decent for a 23 year-old car. I’m really starting to think about a manual swap...
@@ForwardMomentum I've seen sc400 guys gain some whp from a manual swap. Don't how much of a difference it makes on the butt dyno, but the fun factor definitely goes up.
@@samjonas875 exactly. I actually did the Soarer BFI and I know they picked up a few HP with that intake as well. I’ll have an episode eventually on it.
Beautiful video how many hrs power is this now thanks ?
Sorry, I have not dyno'd the car yet so I do not have numbers for you. A healthy GS400 with mild mods and a proper tune should be in the 260-270whp range.
Btw if u are NA engine AFR 13-13.5 is good enough, 12 sth is also fine and can cooler the engine if u push the car hard for very long time, continous climb hill or circuit time attack sth
if always run at 12 sth carbon will build quicker also waste of fuel
Every engine is different. N/A mine liked 12.5-12.7. Now I’m supercharged. So, 11-11.5 is my goal.
U just got another subscriber mate)
got my GS400 about year ago, currently swapping a 5sp manual in it
what're the results of putting in AFC? (did u dyno it after the installation and tuning?)
cheers
Awesome! The auto trans kills these the power potential. It’s so “cushy.” A 5spd manual would be amazing. Are you getting parts from XAT? I have not dyno’d it yet for a few reasons. 1) my AFR meter is giving me great feedback. 2) I really felt a bump in the midrange. Passing power and TQ seems to be way up. 3) a dyno session is $250. All that being said I certainly may do it in the future. It’s always in the back of my mind. More to come! Cheers
@@ForwardMomentum It's going to be a Getrag from e34 M5. XAT is very expensive, I've got conv. plate for 120$, flywheel for 150$ and gearbox for another 200$. XAT flywheel costs around 700$ o0. I'm making the photos of every step so later on will upload on clublexus (nice forum tho). Dyno in my city costs 50 per run=(
So cool! I lurk on CL but do not post much. I’d love to follow it there and IG if you have it. Are you on IG?
@@ForwardMomentum you may also make video for subs about how to connect trans oil cooler (easy operation for 5min job) but it saves transmission a lot from overheating. Hayden makes cheap and nice oil coolers
@@ForwardMomentum no, don't have an IG account. I'm gonna spend all my money if I'll be looking for those nice pics from IG all day long))) keeping financial distance lol
One of my buddies is building GS430 with twin-turbo so I'm trying to safe some money on that idea too)
I'm located in Chicago when can you install mine and tune it 🤣😂
Just a 2-hr flight away! You can do it. I’ll even recommend some settings for you. :)
I bought an 01' gs300 w/183k for 1700$. Got it a few months ago. I had to do maintenance but now the car runs smooth and strong. I hope to het at least 300k miles with it. Do you think thats a probability?
Absolutely! Congrats!
hi great vid how did this mod affect you mpg
Mpg remained the same since the AFC only effects open loop / WOT (or close to it).
Hi,thank you for your videos. My question is you said you immediately started adding fuel, but the A/F said rich , you haha even said it was too rich . So on the A/FC did you mean you pulled fuel to lean out from your 12.3 to 12.7. Just trying to figure out how to operate it and if it is worth doing to my modified is300. You are very thorough with your explanations. thank you
Thanks for commenting. I went back through the video and I was unable to piece together where I may have contradicted myself or misspoke per your comment. Nonetheless, to pull fuel you have a lesser values on the NEO maps (you're correct). Funny enough since I shot this vid K&N took back the FIPK and gave me a FULL REFUND. When I went back to the stock intake system my car runs SO MUCH BETTER. Now my tune is all negative numbers. I'm pulling nearly 12% in places. I probably need to do another street tune episode as I no longer recommend aftermarket intakes on these cars. The stock system is superior. I love having the NEO for tuning and tweaking and now that I am manual I can easily tune the low rpms (previously I could not). LMK if you have other questions!
@@ForwardMomentum What are you stock IATs over ambient when you are running around?
On the is350, the ECU will re-learn the adjustments and all gains will be lost. Clublexus members have reported the ECU compensates and they have to be resetting the Apexi every hundred miles/weeks or so.
I wonder if the same thing happens with yours.
Interesting considering open loop is a fixed value. The NEO simply shoves the ECU to a different fuel value in the matrix table. The ECU doesn’t learn anything in open loop - it just reacts. I’d love to see AFR data logging from the IS350 guys showing the ECU is reverting. My NEO and impact on AFRs has never budged unless I did a significant mod or the weather changed drastically, and even then the changes were slight.
i'm driving corolla AE100 with SAFC2 and AEM wideband, yes the ECU will try hard to compensate back to AFR 14.8 but the adjustment of ECU has it's limit so u need to go on drive and adjust untill the ecu cannot compensate anymore, then it will be the final data u need for your car. but it has an drawback, when u disconnect battary or reset ECU it takes time for ECU to reach it's compensate limit
Again, I’m talking open loop. The ECU never fights for 14.7 in open loop. It only fights for it in closed loop. I recently discovered that the NEO will work in closed loop as well, in regards to fuel trims. So on the low maps I can adjust the values and see it in the trims. And yes, it holds. Point taken about resets though. I have noticed that it takes a bit for the ECU to get back to where it was after a reset. Of course values in the NEO remain the same.
Hello brother, this is Moe! I was wondering if you could tell me exactly how much horsepower you gained from the apexi neo. Seriously considering it fir my bone stock 98 GS400. Thanks in advance!
Sorry, I never dyno’d it due to the ridiculous cost of sessions around here. I would estimate 10-15whp midrange and a little lower elsewhere. You have to have a way to street or dyno tune it to do it right though.
Couple of quick questions. I put a neo in my IS300 tonight and still a bit unsure. Did you change any of the fuel map settings before driving or does leaving it at 0 leave it at the stock factory map? Also did you mess with the setting where it changes what throttle % for high and low map settings?
I left mine zeroed out and tuned from there. The %’s don’t matter much because we’re only dealing with open loop tuning, which is usually around a 70-100% load factor. One thing to keep in mind is that your car will start cold in open loop. So your first couple high map settings (mine are 1900 and 2200) can effect how the car runs at start-up. So I leave those zeroed. My low throttle is 15% and hi is 70%. I progressively pull full from 2500-6500, from -6%- -12% to hit 12.5AFR. Just so you have a reference. Hope that helps!
@@ForwardMomentum yes it does very much. Thank you for the quick reply!
Hey did it come with shifter buttons on wheel or did u install that wheel
The GS400 and some GS300 came stock with shift buttons.
How much hp you squeeze out of it?
Around 20-25 whp, but I need to dyno it to say for sure.
When are you going to dyno ?
4WD ADDICT not sure. I ordered a TTE rep front lip instead of a dyno session :). I know, let the flaming begin. LOL. Seriously though, street tuning works pretty well; I can really feel the difference.
@@ForwardMomentum Great choice by the way! too bad they still dont make the real lips and a bunch of other parts and accessories that they used to for the GS. It's a real shame
Do these apexi neo work for the old sc400 like 1994 before vvti? Is it plug and play
It’s never plug n play. It always requires a custom harness or direct wiring, as noted in my install video. Apexi has a huge db of wiring schematics to look at.
Would running 11.5 +/- be safe for these motors, that's what I'm currently running and it feels great but would rather have reliability than extreme power. Thanks.
11.0-11.5 should be good for FI.
@@ForwardMomentum What would you say is best for NA, thanks.
12.5-12.7
@@ForwardMomentum Great, thanks for the quick replies.
R u shifting from the back paddles ??
If you mean buttons, yes, I was at times in that vid.
Would this work with upgraded injectors or would it mess ur idle being rich?
It’s perfect for larger injectors. You can add or take away fuel with it.
Dear FM do you think i will get more HP if i use Apexi Neo Afc ? By the way my filter is similar original but its KN and exhaust system borla
I don’t know what engine you have, but you can get a few HP on the V8 models. The 2JZ is probably a waste of money. If you have a 430 (3UZ) you can get the ECU modded by Quantum Auto. Just do that.
@@ForwardMomentum Bro my car is GS400 1UZ as yours, so thats why im asking if i get more HP by this Apexi?!
I mean I answered the question in the video. You get some midrange HP, but the real reason to have it is so you can adjust fuel as you add mods to the car.
@@ForwardMomentum Thats answer which im looking , I appreciate your replies and thanks for these informations bro 🫡🫡🫡
Will I be able to pass emissions with the apexi neo? Looking to tune with this in the future and maybe do a street turbo build. Thanks
I can’t answer for Kali, but yes, for sure. You only tune open loop and as long as the car doesn’t go on a roller where they test open loop and you over fuel it, it should be fine.
@@ForwardMomentum awesome thanks so much!
Had issue with ecu reseting on my car how did yours go?
No issues.
Definitely want to see a dyno vid to see some real numbers. Not sure I want to modify mine unless I can get at least 25+ whp gain with bolt ons and tune for reasonable $$. My 99 gs4 has been wasting away in my driveway for a year, because I refuse to pay an arm and a leg to have the starter replaced and I haven't had time to do it myself. What a stupid fucking spot to put it. Other than that its been a solid car. Also owned a 98 gs300.
As soon as this Corona thing blows over and the weather gets really warm I want to dyno it.
Doing the starter isn't that bad. At least you can tackle other things like the manifold gaskets and tidy up other things while back there.
Is that a Pilot in the garage next to your GS?
Good eye! It has intake too! LOL
does this work for the 2uz/3uz also?
Yes. Installation will differ slightly, but same concept.
@Forward Momentum, have you found anybody able to tune the 1uz vvti ECU, interested in SC my LS400 and would prefer ECU tuning over a piggy back system. Thank you.
No I have not. It’s piggyback or standalone; pick your poison.
I now have the split second enricher, the apexi AFC neo is now discontinued and ebay prices for used scratched up ones are 300-400. Is there a different piggy back/substitute for the NEO, I looked on split seconds website and they dont have anything to control open loop. Any recommendations would be greatly appreciated. @@ForwardMomentum
See if Perfect Power has anything. I used the SMT6 on my supercharged 5VZFE back in the day and it worked fine. You need a laptop though.
is it possible to get pops from using this tuner?
Yes, but the tune is whacked. I have only seen it done on other cars though. You can actually get pops on this car with the right exhaust combo due to the cam overlap. When my exhaust was insanely loud I could get a pretty loud few pops after creating back pressure in M mode, then tapping the throttle to go again. I can still do this now, it’s just not as loud. So the answer is yes, but I haven’t done it because I don’t want to drive around with that tune in place.
Why 12.5 @ wot?? Could it be because you have it after the cat?
Hi - It was my initial safety tune. I have since gone to 12.8. After cat AFR results in .1 “lean” indication according to AEM, so what my engine is actually at is 12.7 right now. Dyno tune is on the list, but I’m working on getting headers first. :)
Forward Momentum I have the headers installed and waiting to put the Neo til I can get some test pipes fabbed since I got the SRT tune!
@@ForwardMomentum If you don't want to pay an arm or a leg for headers, some pre 06 tundra headers can work if you cut them near the steering shaft
@@Syncopia I have a 93 LS400 would these Tundra headers work for me too
You're all motor. Could probably lean it to about a 13.0
maybe even a 13.2-13.3
Thank you for your comment. I will consider it.
I vote 13.1
4WD ADDICT it’s weird, this car seems to pull harder at 12.5-12.8.
Do you know anything about tuning the 2jzge?
Is there a specific part number for the Apexi Neo? I’ve been looking into getting one for a long time but could never really get a clear answer on the right one for a GS400. Help please lol
401-A018
Man thank you so much! Literally 2 years of searching and you answered my question immediately through UA-cam comments! Definitely subscribed for sure
YW! Anytime. And thx for the sub!
Do you know if this is the same for a 98 celsior/ls400?
It should be. Remember, the PN for the NEO isn’t really the challenge as it’s just a fuel controller; the challenge is ensuring you use the correct wiring diagram when hooking it up to the ECU.
Any suggestions regarding gs430 2001, 3uz fe engine
Do you mean tuning options?
Yeah... Or what software or tools can be used to remap a 3uzfe ecu?
Sounds like you’re interested in fuel and timing options. I believe there are some standalone options, but getting a standalone fully set up was insanely complex, time consuming and expensive. The most affordable method is a piggyback like the NEO; of course that only handles fuel in open loop. Your best bet might be to check with AEM and Perfect Power or similar.
@@ForwardMomentum im already using hptuners to tune other cars... But i want something similar for 3uzfe
I’m not aware of anything, but they may exist. LMK if you find any info on it.
new sub n owner of a gs4 too
Could this be done on a gs 300
Of course. You have to follow the wiring diagram for your engine is all.
How hard is the install? I got an 04 is300
Did you watch the video?
@@ForwardMomentum I did, I'm just not the most mechanically inclined lol
It’s hard for me to answer for you. On a scale of 1-10, 10 being the most difficult, I’d rate this a 5. Requires more thinking than mechanical ability. You got this!
@@ForwardMomentum Thanks, I cant wait to see more from this channel! I'll attempt it myself
how will this work on a gs300?
I’m not sure how the I6 will respond to a tune. Give it a shot! ;)
Apexi link ?????
Here you go: apexi-usa.com/electronics
12.5-12.8 is way to rich for any na car
Nope. Each car is different. This AFR yielded the most midrange power on my 1UZ. Your settings and results may vary, but there isn’t one hard and fast rule.
I have GS300
Forward Your car better then mines lol
JayLifel the GS is a great platform. At least you can easily Aristo TT swap yours! I can’t!
Forward Momentum I didn’t know I can
JayLifel yep!
I gotta get my manual shift working.....my "M" just blinks. I miss the AFC/wideband days in my boosted honda
First? haha