Diesel Insights: Why Increased Rail Pressure is GOOD For Your Diesel!
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- Опубліковано 8 тра 2018
- Common rail diesel injection has revolutionized diesel performance. A key component of it's success has to do with rail pressure. Diesel Insights Host, Nick Preignitz of DuramaxTuner.com, explains why increased rail pressure is GOOD for your diesel.
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Yall run a tight operation, thanks for all the videos keep it up 👍🏻
Thanks for the insight once again. Nice to meet you at UCC too.
Thanks, nice little video and insight. I have the LB7.
Great info! Very clear and concise. Thank you.
Great vids great info. Keep it up guys!!!
Great explanation once again!
Great info. Answers lots of questions. Best podcast for all things diesel too. 😉
thank you great videos!
now I'm comparing solenoid vs piezo, your video helps
Great work
Lord of the diesels......nick is the man.
The best videos on the internet on dmax period
ok thanks
Love your videos
This is a few years after that I've found this vid and it's right.
Higher rail pressure will give higher atomisation everywhere which increases power and cleanliness with almost 0 downsides. It also means an increase in the fuel injected with no other changes. The only thing rail pressure tuning doesn't really address is injection timing otherwise it's the main thing you can increase 10% without too many worries!
You guys need to open a shop in Alabama, pretty please!
the big issue with common rails is clean fuel. 2 micron, high efficiency (most filters are only 60%) with a boost pump pushing it through to negate fuel starvation. Cellulose filters are also good since they chemically bond and capture the moisture (both free and dissolved) from the diesel.
Well said. I’m turning my Cummins up to 32,000, ddp did a test where they turned the stock injector up to 32000 psi and it performed really well, and flowed about the same as a 50 horse injector
@user-nf3oq2ge3g Good to know!
I live in the mountains. I just traded my LLY for an LML. I'm loving it so far. Had EFI Live on my LLY but the LML is stock at this point. I was driving in the Hills today and a Cummins was ahead of me. He was rolling coal so bad I couldn't see him and he did it all the way up the hill at a constant speed. I can't imagine what his fuel economy is, but I'm sure it wasn't economical. He had a huge stack in the box.
Im getting a code p0016 crank and cam correlation. Whats the fix and will it hurt the anything if I run it a while?
Did y’all stud that lmk I have a 15 with wcfab 369 kit and put the 4.2 10mm strocker. And coming to y’all for trans now
ok so i have a 2015 lml with a exergy sportsman cp3. will the cp3 get to 35k reliably? thanks
Is 2400 psi to low for a lml it has a cp3 in it looks like from a lbz
Higher pressure in the fuel system will cause better atomization of the fuel and a better burn.
thank you for the vedio sir,I'm from Nepal and I'm running transport business,I do have Tata heavy trucks which comes with Cummins engines,here in Nepal diesel costs is so high and the trucks consume more fuel and no savings,very hard to pay bank installments so would you please teach me the methods by deleting egr,dpf,muffler or whatever,here in Nepal nothing is illegal.hope to see your positive answer.
So I just did the Cat fuel filter adapter and now keep getting p0191 code fuel pressure sensor range/performance issue and p088 code. I pulled everything back apart and noticed that the check ball is touching a cross bar made into the adapter. I tried to alter the bar on the adapter so the ball would not touch and cause it to be open some. My question is should I cut the bar completely out or remove the check ball completely? Never had a issue until I put the cat adapter on.
Mine would stall out after a short time after priming. I removed the ball and have been running no probs. 3 years and going
Is it possible and/or beneficial to increase rail pressure on an LBZ? What components need to be replaced to allow this? Exergy Sportsman cp3 and injectors? LMM injectors?
Lbz injectors are bit better than lmm. Lbz are 7 hole and lmm are 6
So on my deleted lml, tune 1 vs tune 5, would you say the fuel pressure is raised as part of the tuning for increased power like you said, up to 40k psi? Can more gain be made knowing this now? I use a very popular and respected company for tuning. I guess I'm asking, do you think this is somewhat common practice with lml tuning since it became available?
The tunes are almost always set up on the lml so that your base tune is the hot (level 5) tune the the lower ones just restrict max injected fueling. So no, pressure is not used to adjust between the tunes on the lml
Previous versions could do this though
I have a 02 lb7 duramax and had a ppe race valve installed. I don't know if that's the reason it has white smoke now and seems to have a little more black smoke as I drive. .😮
Get it diagnosed if you can. Don't want it getting worse!
lso how much smoke should I see at the pipe during hard excelleration?
A light haze is common while the turbo is coming into the efficiency range.
Nice video. On a 2018 L5P. Autel scanner live data on high fuel press.
The desired pressure is in red and 7000
The actual pressure is good up and down but within limits but the desired fuel pressure is to high.
Any thoughts.
Any codes with a scan? Lift Pump working properly?
so, you have another video out saying put in a fuel rail relief valve plug. which doesn't open at all because its solid. In this video you say crank up fuel rail pressure, but make sure you have a relief valve that will open when it needs to to protect the system. Do you make a after market relief valve that opens at higher pressure?
The solid relief valve is for the 2001-2010 trucks, I believe Nick was referring to a 2011+ truck when he is discussing running up to 40K psi of rail pressure (which would require a relief valve). The 2011+ trucks relief valve is electronically controlled and seems to be much more reliable.
@@Duramaxtuner
thank you for that info. Just got my plug for my 2005, and wanted to make sure I'm not going to ruin something. I don't race my truck, but tow occasionally a camp trailer. so not looking for super high performance. but better performance
What's considered the safe max for lly/lbz injectors? I know lots of tuners run 180mpa. But could they be safely pushed to 190/200mpa in a racing application with the correct supporting mods?
It depends on the rest of the setup and how the log looks after the adjustment.
What about adding,like stacking a powerpup on the rail on an lbz that is efi tuned.its what we used to do with the Diablo tunner with powerpup stack back in the day.just wondering. Love all ur info in these vids
We would never suggest stacking box programmers. The only safe way to raise rail pressure is with custom tuning
Duramaxtuner no I no that.remember the powerpuck from Diablo is 4 rail pressure .not ecm tunning.i had them both.powerpuck was like the ppe duamaximzer. Just wondering my truck is efi tuned.but what about adding the powerpuk.on to the fuel rail along with efi.do I make sense.i called wade at diesel day dreams.i called still no call back.just wondering
with EFILive we have the abaility to command rail pressure so no need for additional modules to get the most rail pressure possible.
Duramaxtuner yes ok thanku
Sir gd evening i have a big problem
Related to the fuel system 6m70 engine . The Fuel pipe is very hot
And the RPM is only 15,000 there is low power and then
But if you turn of the key waiting for 15 seconds i well start again it start immediately and then the RPM is back to normal 25,000, help me please
god damn, your videos rule.
thanks, we do what we can.
Can you guys make an install vid of your 6 speed conversion kit?
Sure, keep an eye out for it. However it is as simple as swapping out valve bodies and TCMs.
Duramaxtuner thanks at some point ill buy your 6 speed kit for my 2002 lb7 , but I have other things to pay
@@Duramaxtuner X2 here would like to see what I'd be getting myself into. On the highway a lot with my LLY and the conversion is always on my mind....
Is this the idea behind the "Duramileage Performance Module" that promises increased fuel economy by increasing fuel rail pressure sooner in the RPM range?
Ok I'm confused alittle. Sorry if this seems like a dumb question. You talk alot of getting rid of the stock relief valve that for a solid plug. But here you say higher pressure is good all around as long as you have a proper relief valve.
How do I know what model I have I have a 09 Chevy Silverado z71
Travelin Thru lmm
Is or will there be any type of cp3 or kit to run higher fuel rail pressure for an LB7? Say 25k-26k?
That is excessive for an LB7 unless you are at a really big power number.
Blake, a common practice is to use an LBZ/LMM fuel pressure regulator on LB7/LLY CP3s. It allows the older pumps to output higher rail pressures (26k psi max). Tuning changes are needed with the newer regulator, but any reputable shop including Calibrated Power will be able to do that for you with EFI Live.
@@Blackneck1994 but why tho? Is it worth it for a daily driven truck with no plans for more power ever?
can i ask,how much hino N04C-TS turbo engine normal rail pressor ?
Sorry no idea.
Hi Nick,
Great info. I have been waiting to tune my truck with you guys due to money and a little nervous about the mileage I have ( currently 140k ) also the truck is stock besides the Fass 165 you suggested. And the big worry is the CP4 I have . It’s a 2011 Silverado. Do I have a CP4 or CP4.2 ? How do I know and should I be worried?
Thank you,
Heber
A Cp4 and Cp4.2 are actually the same thing. We would suggest an Exergy 10mm Cp4.2 for an upgrade. They have put them through a lot of testing and have excellent reliability.
Okay , is it okay to leave the factory one in? I have the Fass 165 and would it be okay to go with the tuning from you guys at that mileage 140k? Daily driver and pull a 6k travel trailer for camping.
Heber
Heber Clement III 140k is pretty low mileage on a Diesel
Thanks Kit. So going with your tunes on this stock truck is safe and I should not worry ?
Yes you will be good to go.
Hi to all you, I have a question, I am buying Mercedes vito, 1-st generation, does anybody knows which engine start's better in cold winter (I live in Europe), 2.2 CDI (common rail), or the old
2.3 turbodiesel, thanks for answers
Sorry, we don't deal with those enough to give you a good answer.
@@Duramaxtuner thanks anyways
How do you monitor the amount of smoke the engine is producing pre DPF filter to know if you are producing the same amount of soot after the tunes as the truck did in its stock form? That is my only concern about getting a tune for my emissions truck is that I don’t want the DPF clogged quicker then it does in the stock form.
Air Fuel Ratio is measurable on just about any emissions equipped truck. This and measured REGEN frequency along with soot accumulation rates let us know where is safe and what is trouble.
I’ve got 08 lmm with tunes and emissions intact, higher the tune the more it will regen running tune 1 witch is 30hp over stock I can run it till it miles out and dose regen due to mileage, still horrible on fuel compared to deleting
Have you noticed any additional regens on clean sweep vs when it was stock or is it producing the extra power without any additional regen cycles?
I bought the lml tunes from them, u wont regret it. My regens didnt seem to get any more frequent.
The LMM has first generation emissions equipment so it is not going to perform as well as an LML. Also, I would consider doing a boost test to make sure we dont have a charged air leak causing higher soot accumulation.
Member the old predator tunner.with extreme powerpuK from Diablo .all I'm askn
Remember, yes. Use it . . . no.
*check eng light help*
Hello! Great video. I have a 2007 LMM Duramax 2500HD (half year truck, 08 body style). Double checked my vin because I had hoped it was an LBZ.
Currently have a turbo back delete kit and Anarchy Diesel Tuning Mercenary programmer on it. I have had the programmer on since 2015. Lately been getting code ECM P0193 when I try to accelerate really quickly. No other issues or codes. Researched the code which leads to fuel rail pressure sensor. The volts check good and fuel pressure is around 33,000 kPa at idle which converts to 4786 psi on google. Isn’t that extremely low? Is my scanner tool reading that pressure wrong? Wouldn’t it be doing really terribly if that was actual fuel psi? Could this also be because programmer is demanding more fuel and the stock fuel pressure sensor is flagging it?
Looking to find permanent fix with same set up?
I installed my race plug on my LBZ and fuel pressure dropped in half. Reinstalled the factory unit and went back to 26000. Confused???
Either your plug is damaged or it’s not tight enough
@@Duramaxtuner thank you for the reply!! We tried two different brands of race plugs and torqued them to 73 lbs foot. I am anxious to get this right. Thank you!!
WHAT IF U INCREASE THE " WIDOW " ?? VIA A ' SLIGHT ' CHANGE IN THE BUMP STICK ??? HOW DOES THE FIGURE INTO THE SCENARIO ???? DID WE JUST LOSE IT ??
OR, DID WE ' ONLY ' MAKE MORE WORK AND NEED TO ' AGAIN ' RAISE RAIL TO ACHIEVE SAME GOAL ??? AND WHAT HAS HAPPENED OVERALL ????
Every truck have the same function
Which function is that?
Make l5p tunes...
L5 What?
Duramaxtuner 😔
🤔 this is thirteen minutes maybe I'll learn something. Or it'll be boring. Thankfully it wasn't