Complete NA to NB Parts Compatibility Guide // Mazda MX-5 Miata
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- Опубліковано 16 вер 2019
- This is my comprehensive guide detailing the differences in parts between an NA (1989-1997) and the later NB (1999-2005) MX-5 Miatas and which parts can be easily swapped across.
0:30 Exterior
2:53 Interior
10:23 Engine
15:04 Driveline
17:56 Brakes, Suspension, & Wheels
EXTRA INFO:
There is a great dot-point style list of parts compatibility on the Miata.net website here: www.miata.net/garage/compatib...
And Esteban also submitted a link to his written guide, check it out here: RedlineAutoParts.com
MIATA BRAKES INFO: • COMPLETE GUIDE TO BRAK...
MIATA DIFF INFO: • ULTIMATE DIFFERENTIAL ...
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Now this is a video the internet was in need of
Haha, thanks for watching M G
Was thinking that when I saw it ,much needed reference
Good reference! Expecting this to blow up in the community lol
Most of this was already on miata.net
@@BigBenlolz Nice. I was just thinking that a 22:46 video is good, but a bullet point list that takes a minute to read and re-reference later would also help a lot.
Thank you for the kind words Juan. This is just a plucky little youtube channel so if it helps even just one person then I'll be happy haha!
Great stuff, Brendan! You should write up a written version of this for quick reference - that would be SUPER handy!
Thanks Kino, I do usually like to include a write-up on my web site, but in this case there is already a few written resources for this sort of topic, so I wanted to offer my own take in a different format by doing it in a video. Check out here for some of my other guides and info beavismotorsport.com/guides-tech/
Comprehensive - good work.
Thanks for sharing your knowledge.
Gotta love UA-cam after watching pieces like this.
Thanks for watching!
THIS is QUALITY CONTENT.
Thank you! I’m looking into getting a Miata, I like the NA for looks and interior mod-ability - but I like the NB for being newer and cheaper. This is awesome
Thanks GV, really appreciate your support, good luck in your search for a miata :)
Good vid!
Do have a couple corrections/extra info.
An NB1 1.8 in an NA 1.8 is an easy swap (Even easier then the NA 1.8 in an NA 1.6 because you don't need any adapters of any sort).
Just swap all the electronic parts (Sensors, injector wiring, alternator etc) of the NA engine on the NB engine.
In some countries (Not sure exactly wich but i know the US has this) the NB1 had a returnless fuel system so you need to sort out the fuel rail. In Europe the NB1 has a return!
This way it will run fine on the stock NA 1.8 ECU.
All NA's have the big starter motor, the smaller and lighter are all NB (Even the 5speed).
Think you need to modify the dust shield a bit to use the NB starter motor on an NA gearbox and only two of the three bolts are usable. Not completely sure on this never tried this swap myself, but i've red about it.
Not in all countries the NB2 had the 6speed and the bigger sport brakes unfortunately :(
The NB uses a slightly different upper balljoint so if you're going to use the NB font hub on an NA you also need to use the upper arm.
I've compared NA and NB rear hubs. And the only difference that i could find was that the hole in the upper mount isn't in the middle on the NB hub like it is on the NA hub.
So it only has less camber and it isn't actually 5mm wider.
Sorry but i really hate that there is a ton of old/misinformation in the Miata community and it annoys the shit out of me.
I do really appreciate that at least some people are releasing some good Miata content on youtube, unlike alot of the crappy ones.
Ethan Vermillion And thats why you swap all electronics from an NA1.8 engine onto an NB 1.8. Then it is plug and play.
@Ethan Vermillion No... you're not getting it... The NB1 1.8 (BP4W) is for the most part the same engine as the NA 1.8, only some minor differences. But the base is still the same so all the NA sensors, CAS, throttle body, coil pack, alternator, valve cover (Although you dont need to swap this but you're left with a hole or an unused sensor on the front) etc. bolt onto the NB engine! This way you can just use the stock ecu, stock wiring etc. from the NA!!
So this makes it exactly like you would swap in an NA 1.8 engine back in but with better flowing head, slightly higher compression, solid lifters.
Exactly like alot of people are doing with the NA 1.8 swap in an NA 1.6 chassis but without the need for any adapters etc. so its easier.
@Ethan Vermillion As i said the stock NA 1.8 ecu. It can easily run the slighlty higher compression ratio without a problem.
Thank you RicSupra, there's so many small variances in the different markets around the world so it can be tricky to get the exact data for every case, and people would certainly get bored if I started reciting off all the exact specifics haha! Nonetheless, thanks for sharing your detail :-)
What about NBFL 1.8 in an NA 1.8 ?
This was very informative and well done showing each sections at a time!! Definitely using a bit of this for my NA miatas 🙌🏽🙌🏽♥️♥️♥️
Thank you for watching Redrum, really appreciate it, hope your NA miatas are all zoom zooming along nicely!
BEAVIS Motorsport thank you!! One boosted and one is completely stock... so one zooms a bit more 😂🤘🏽
Love this guide, also love your shift boot and handbrake boot, very nice
Hey, thanks!
Your videos are just brilliant !!
Thank you dude!
This is the single best video for people fixing up Miatas.
Thanks for watching Kevin. :)
Awesome video! I did a full NB1 swap in my NA1 and it was a lot easier than I was seeing. I just bought a rough NB and took it completely apart. Then swapped everything that would fit. Except the interior. I like the NA1 interior.
Nice dude. NB1 and NB2 are very similar except for the main obvious differences being the dash cluster colour, the centre console with the extra pocket for a cup holder, and the door cards having a slight difference in design.
Great reference, well done sir!
Thanks mate, hope your car is going well, haven't seen much from your channel lately!
Great original content!
Thank you Abdul, really appreciate it!
Really good video with good info
Glad you liked it!
I need this kinda video in my life
Haha, thanks for watching Ben :)
Great video!
Thanks Wayne!
Just picked up a Nb1 a couple months ago and I’ve been looking for a Channel like this. Fuckin gold man!
Congrats on your new car Anthony.
Yess!! This is amazing! Thank you so much! NA parts incoming for my NB! Any chance of a PDF of all this info?
Actually there's a great written document on the miata.net website, I take no credit for this particular page, just sharing the link:
www.miata.net/garage/compatibility.html
Hi, love the videos. You've probably answered this but what wheels are those? I looked around but couldn't seem to find out. Thanks!
15x8 +25
Wind blocker from NB actually directly bolted into my 92, although only with 2 bolts instead of 4 bolts on NB.
Ah cool thanks for sharing Kevin.
Hi. Found this a very handy video. I myself have an NA and a wrecked NB (VVT). I'm not interested in installing the interior into the NA but was wondering on some things. The NB has ABS and ODB2 so have you donea you done a "nervous system" (electrical system) swap . I understand there are differences in some stuff but thats OK as I'm planning a full strip down and rebuild. What I'm not sure on is the benifit in going ODB2. Any thoughts?
Glad you enjoy the video. Certainly for me swapping the whole wiring from the NB into the NA meant the ABS and functions like OBD2, as you mention, all worked and were plug and play.
I personally wouldnt have gone through the effort just for OBD2, it was merely a convenient benefit of necessity.
I have a question when it comes to the main wiring harnesses going through the firewall (btw this video is suuuch a life saver and thankyou). The NB has 3 holes instead of 2 for the NA on the firewall for the wiring harnesses(which I think I see the 3rd middle oval hole in the video). Did you just cut it out and use "u channel" or did you make a rolled lip like the other holes have? Sorry this was long and thank you very much again.
I cut the hole in the firewall behind the engine to match the NB wiring harness. The two on either side of the car seemed to match the harness without modification.
thank you
You're welcome
i instaled the NB starter motor in to my NA 1.6 without any issues💪😎
Zoom zoom! :-)
Some time stamps to help people jump around the video.
Exterior - 0:30
Interior - 2:53
Engine - 10:23
Driveline - 15:04
Brakes, Suspension, & Wheels - 17:56
Thanks man :-)
MX-5 owners clup publish your video....great
Ohh, wow that's great to hear, thanks for watching frossato!
Cool engine damper, first time I've seen one like that - mines of the strut.
Ive been looking at those - do engine dampers deliver as promised?
@@quinthuyers126 I think it improved my gear changes to be a bit smoother and more comfortable, though it already was pretty good. Looks cool too. Maybe it's a bit of a psychological improvement too...logically it should help keep the engine and attached transmission tight so yeh, probably does help, a bit.
I did some diy reworking of the damper to make it work this way, I just wanted something simpler and more direct than the usual slather of mounting brackets.
Thanks for the informative video. I would like to know if the harness for the tail lights and fuel pump from a NB will work in a NA?
Thanks for watching Denroy. The tail lights plugs are different and not interchangeable - you could splice the harness from NB to NA if you source the NA plug. I believe the fuel pump electrical connectors are the same.
Very useful video! Does anyone know the OEM part numbers for both door windows (passenger + driver side) for an NA6 mx-5?
NA0158510 & NA0159510
Hi can you make a video on how to add the door panels?
It is not a simple bolt on solution. I had to make custom fixings/mounts for the door card, door handles, etc.
Great video. Very informative. I noticed that you mentioned previously that you have the abs system out of amk2.5 in your na. Was just wondering how much work it was to swap. I have a 99 nb that didn't come with and but I was thinking of trying to install it if it wasn't too much hassle. Any suggestions?
It mostly just bolts right in, most of the holes for wiring etc are already on the chassis. I did swap the entire wiring harness from the NB also.
@@Bbeavis was there much difficulty with brake lines?
@@50pooface No issues of significance that I can recall. I swapped the NB lines onto the NA body.
@@Bbeavis I see, so it just bolted up? That's pretty handy. And your seats! I was trying for a while to get a set of sparco sprints to fit in my nb, but I had great difficulty with the rails and belt buckle. Ended up having to make adapter plates for them to bolt up correctly. Did you have similar issues using the bride's or are you using different rails?
@@50pooface I rigged up some DIY adapters to make the seats fit.
That’s was very informative, thank you. A 93 na has a 7” lsd diff. Will that housing take a Torsen diff?
Thanks. As long as it's the larger 7" diff, then yes an MX-5 spec Torsen centre can be installed.
@@BbeavisI re-read some stuff and it seems I am wrong about the 93 having a 7” diff. That’s 94.
Could you make a video on in the ignition coil
What about it?
The 3 pin connector for the rear window demister on the NA and NB are different. You can buy a loom, but it's big bucks just for a different connector.
Good tip, thanks for sharing MJ!
Good day mate. I have a 96 Miata, and I'd like to install custom glow gauges, on eBay there are a few models, only there are more and cheaper for the NB, a lot cheaper, I was wondering if I could install the NB faces on the NA. It would be just the faces. Do you know if they fit?
Gauge pods/clusters and the faces really aren't that simply interchangeable.
im trying to put a na 1.6 in my 99 nb whats your advice for wiring harness? just get one out of a na?
My advice is use a 1.8.
how about the ignition coils. from a 2002 1.8 how do u fit it into the 1990 bracket
Probably have to DIY that, I'm not sure they are a direct fit.
I have to ask, how did you fit the bride seats inside an NA? I’ve been tempted to try it, but was told it wouldn’t work… and yet here’s yours with brides!
Just made some simple brackets to bolt them to the OEM seat rails.
I heard the stud pattern in the mk4s wheels are the same as na and nbs so can put nee wheels on them. Also I think roll hoops can be swapped from nb to na
That is correct. 4x100 wheel stud pattern.
@BEAVIS Motorsport do you know if it is possible (useful) to put an NB 1.8 airbox with filter (and other parts excl the MAF sensor of the NA8) onto the NA8?
I don't see what value that would really add in terms of performance. Yes you can make it fit, I have an NB airbox in my NA, but only because I didn't have an NA airbox.
@@Bbeavis thank you for the reply. NA airboxes are more difficult to find used than the ones of the NB.
BEAVIS Motorsport - please tell us about the wheels you are using on your car? Are those NB or NA? Will they work on NA if they are NB? Thanks!
Hi Scott, the wheels are 15x8 Axis OG Banzai. Both NA and NB cars use the same 4x100 stud pattern and most wheels are interchangeable between models.
The sidemarkers are the same too ;D and they are even the same in the nc fl
Oh quite true... something our USA friends wouldn't know possibly as their cars don't have them!
Is it possible to use the window switch buttons from the center console of a na 1991 for use on a nb 2000?
No the connectors and console shape are different unfortunately.
G’day Brandan! M8 awesome video! Alexander White here from Facebook. Would you say the front subframe swap to an NA8 (I’m planning a VVT outa of an automatic 2001 & keep the 5 speed) is a big enough improvement in handling that’s worth the subframe swap? From what I understand the rear one doesn’t make too much difference. Thanks for your help as usual!!!
HI Alex, I can't personally see why you would go to the effort unless you had some justified need other than just handling. It's quite a lot of effort to swap and the net change is minuscule. Of course if you have the subframe out anyway, and had the chance to choose which one to use, the NB one is my first pick. You'll need to use the NB steering rack to match also. Cheers :-)
BEAVIS Motorsport I see, I have heard a couple of guys say, & this in my head also seems to make sense. Dropping the engine with the subframe is a matter of 6 bolts and seems simpler in my mind than to fish out the engine out with a crane I also heard a person who preferred to drop the frame to swap his clutch rather than wrestling with the top bolts . After driving a stock NA8 97SR Limited on Bilsteins , then my last 94 NA8 Maxim header Corns muffler on Cusco coilovers and a pretty stock1992 NA6 with possibly Mazdaspeed option ratios , years later a 1999 on coilovers impressed the shit out of me. Maybe the quicker gear ratios... but the turn in is so spot on
So basically I’m thinking if I do the VVT swap I might as well just do it with the entire subframe or am I not getting something here??
Again mate I can’t wrap my head around how just the engine alone will be easier to swap VS the engine whilst still attached to the subframe with wheels and all minus wiring and AC fuel lines etc.... or am I tripping ... remove the subframe bolts on each car and literally drag/wheel the entire NA front out with body craned up, do the same on the NB, remove the automatic and even go to town on the radiator section with a power saw so no need to jack it up... oh and most likely will go with an aftermarket radiator setup...
Personally I prefer to lift the engine with a crane, or for a clutch swap i just drop the trans out underneath. I've never understood the desire to drop subframes for either of those tasks.
I put a NB starter and NB throttle body/IACV on my NA8
Thanks for sharing Guido.
Love those wheels, which ones are they?
Axis OG Banzai 15x8
i got an NB miata rn, did you think i would be able to use NA body panels for the exterior. There no NA miata in my country but i like the look of it.
You cannot bolt on any exterior body panels from between NA and NB, unless you employ heavy effort in cutting/welding/bodywork.
@@Bbeavis it's still possible then, thank you
You mentioned the coilovers we're pretty much interchangeable. I had always that the NA top hats wouldn't fit on an NB and if you tried to swap the NB top hat onto an NA shock some modification may be required? Let me know cheers
You're right the stock NA top hats don't fit in the rear on an NB. Also had this problem with Cusco aftermarket top mounts for an NA that didn't fit on the rear of an NB.
i have nb tophats on my na they fit fine as long as you line the top bolts up properly. they also lower the car some for some hotboi points
@@28thEQUINOX yes NB tophats on NA seem fine but it doesn't work the other way around from what I've been told.
You may be right, it isn't always a two way street. Almost all aftermarket solutions are sold to fit both chassis'. But as I mentioned in the video there are some possible issues with swapping OEM NB rear with OEM NA rear.
I got nb on my na...no problem
Plz Help ! Could I buy an NB and fit the entire NA Front end (some slight cutting included).
I'm asking cuz I'm 16 years old, from Germany and really allways wanted an NA, since I was a little child, but NAs aren't that cheap anymore.
So please answer : 1. Could I do that sort of build ?
And 2. Should I just save Up more for an NA ?
Thanks ^^
It has been done before. But it is not easy. If you are a skilled fabricator/painter then it is possible. For 99% of people, it is going to be cheaper to save and just buy an NA.
Hi, Which coilovers would you recommend for a $1000 or less AUD budget?
Hey Louie, there aren't really any solid options for sub $1000 unless you look at second hard. If you can stretch an extra few hundred for BC, that's always my first recommendation.
BEAVIS Motorsport ok, thanks for the input.
Does anyone know if I can put an NB wiper/indicator stalk into my NA6.
It can be made to work, but they aren't exactly the same fit.
What size wheels are these? didi you roll the guards?
15x8 +25, the guard lip is slightly rolled.
I have a 94 automatic and I want to know if I can change my na transmission with an nb manual transmission and if so, what do I need from the nb?. I haven't had any luck finding information online and I really want to hear from someone with more experience..you seem like that guy lol
Logically you would neeD:
Flywheel
Clutch
Clutch pedal assembly, and hydraulics, master/slave.
Shifter
Shifter boot/centre console
There will be switch for reverse lights on the trans, that should be a simple wire connector.
Transfer the NA speedo drive over to the NB trans, I believe thats a swapover/bolt on item.
Not sure about wiring/electrical, I think the old NA auto was simple, there may just be two wires for a neutral lockout you need to bypass, I cant say for sure.
and then obviously the manual transmission itself.
Mounting/bolts/driveshafts/ppf frame/starter motor etc shouldn't need changing.
@@Bbeavis thank you so much!
My Real Life Budget on the 1.8 the auto driveshaft is shorter than the manual so you’ll need to change that
My favorite swap Tessla Dual motor
That would be spicy.
Great video. Wondering why you didn’t just buy an NB.
I did buy an NB to make this car, except it had been in an accident and was damaged beyond repair, hence I got it very cheap. It was therefore a perfect donor for this NA shell that I purchased which came with no engine. So they were a match made in heaven.
BEAVIS Motorsport gotcha. I just was gifted an NA so this is great information for me as I rehab it.
Anyone know if its possible to use the NB electric window mechanism or motor in a NA door? NB windows work so much better than NAs!
They are similar but not a direct bolt in.
Some NAs actually do have ABS. Atleast in the US
There are so many variances on all sorts of components depending on locality, it sure can be hard to catch them all!
I had 2 miatas na with abs
My 90 na doesnt have abs
Also some NBs don't have abs either,mines a '99 uk 1.6 without abs
I have a 95 with abs
Great video. Made me a lil stiff
Where?
I have a question, assuming this doesn't get super buried. My friend purchased a 97 NA miata that has been NB2 swapped. The previous owner deleted the air conditioning, and we're having difficulty finding information about installing working A/C in an NB2 swapped 97 miata. If anyone can help, I would greatly appreciate it!
I have the full 'NB2' AC setup in my NA.
The only difficulty is getting the hard-lines to fit near the left hand headlamp.
@@Bbeavis thank you so much!! Incredibly speedy reply!
How did you wire the popups?
Essentially just a relay and a 12v feed from the headlights power.
So how hard would it be to convert the front end of an NB to NA? Has this been done before.
Very hard.
Ok I have a very basic question lol. I own a 91 Miata with a 1.6L engine automatic transmission. Can I swap for a 99 1.6L with a automatic transmission?
In theory, yes. Depending on how you do it exactly. But physically it will bolt right in. Just lots of wiring and things that you will need to consider.
Sorry if I missed it, but will 6 speed gearboxes work with NA6 propshaft/drive line?
I’m fairly certain that the 5- and 6-speeds are completely swapable
Straight swap. Make sure you have the gearstick with the gearbox though as they can be slightly different
@@charliesmith1522 To add to this, what I do know for sure is that the 6-speed does NOT need extra oil in the turret like the 5-speed does.
Hey Touge, as the others have said, the 5 and 6 spd trans from all NA & NB cars are directly interchangeable and will bolt right up. There may be some differences with small ancillaries like the type of connectors for the reverse or neutral switch, or the speed sender.
awesome thanks guys
Will an nb steering wheel fit my 90 na it has an airbag
I believe the steering knurl is the same, so it will fit on and bolt to the shaft. However you may find it doesn't fit perfectly with the shroud around the indicator/wiper stalk.
Does Na miata 1989 come with clock spring signal from factory ?
I am not 100% sure but I believe so.
@@Bbeavis alright sounds good thank you
What wheels are you running ??
They look really nice
The car in this video is on Axis OG Banzai 15x8.
BEAVIS Motorsport thank you 👍
PPFs arent interchangeable btw, the 1.6 NA wont fit the 1.8NB, it's a different length. Got caught out with that myself. Think it might only be related to the early 1.6 6" ring diffs being smaller but cant confirm if there are any others that will run into issues.
Thanks for the clarification MG, was it by chance a case of Auto vs Manual PPF's?
@@Bbeavis , I can't remember for sure. Basically I was swapping a diff over onto my 98NB and one of the PPF bolts rounded so we decided to just pull the diff and PPF together and swap in a PPF from a 1.6 shell we had in the shop, but it was too small. I think it was a manual, but it was definitely a very early 1.6 car and had the smaller diff.
Can i put an NA engine into my NB? I know its weird but i'm trying to save money down the line.
Yeah you can, people have done it before.
How about keeping AC in my NA with a VVT swap ? Tricky much or ?
I squeezed the NB AirCon on my NA. The only tricky bit really was re-working the hard lines around the headlight. Its otherwise just nuts and bolts.
BEAVIS Motorsport thanks so much mate!!!
Should I buy a NA or NB cause I’m currently looking at a NB for $2400
Hey Tanner, Both are very similar, it depends on your budget and what features of each car you are looking for. Maybe have a look my buyers guide here: ua-cam.com/video/ugfDRMiaC7I/v-deo.html
The side indicators are the same, aren't they?
Same for NA/NB & NC generations.
Do the taillights fit
Nope, not at all.
How hard was it to get the NB wiring harness to work in a NA?
Just had to adapt the NA front and rear exterior lights to match with the NB harness, everything else from the NB was swapped into the NA so it was essentially plug and play.
@@Bbeavis How did you deal with the fuel is your NA With the NB harness running a return or returnless system? I'm wondering what to do with the sensors from the NB
@@markketterer7826 The entire system is from an NB, NB pump, NB fuel lines under the car, NB fuel rail, NB injectors, NB harness.
Wow, good info there. Maybe send this to MX5 clubs, not that they'd wouldn't know it already. Do you watch Urchfab? He is putting an E100 body on an MX5 chassis for a drift/time attack car. Very interesting series. At the moment he is fabricating lower control arms to accommodate a lowered suspension, camber wise. Anyway, thanks for the post
Urchfab is my favorite MX5 Miata related channel! Matt is a Master fabricator... he deserves many more subscribers and sure he will get em...
Hey Don, thanks for the suggestion, I'd not heard of Urchfab... he just scored himself a new subscriber :-)
what is your wheel model ?
They look like Hayashi Racing Streets but possibly reps. Hayashi Street wheels are usually 114.3 PCD so if you buy some you need spacer adapters.
They are a Hayashi style copy... Axis OG Banzai 15x8
What wheels are you running?
The car in this video is on Axis OG Banzai 15x8.
@@Bbeavis Wow, thanks man, you reply quickly to older vids? Madness
😜
What exact bride seats are those?
I don't know sorry, just something I bought used online, I don't think they are genuine.
@@Bbeavis I still don’t know what exact brides would fit if I decide to import. Thanks tho
still have those bride x illest seats? willing to sell? 😁
Yes and no :)
miata of theseus
:-P
I think you should have bought an NB2 bro... Although I think the exterior and interior of the NB1 is better, as well as the engine.
I already own an NB2 - check out my other videos. I also bought a smashed NB to swap into this NA - so it wasn't a pointless adventure I assure you.
Interesting, not many people think the NB1 is superior, so you are certainly in the minority there!
Probably should just have started with NB and swapped and NA body... Lol
That's what I did. Had an NA body and an NB with body damage. Swapped all the components from the damaged NB to the NA body.
3:58 same fking birds from last time I bet.
I really wish I had a proper garage or something to be able to record better, but I gotta make do with a driveway :-(
BEAVIS Motorsport I’d be thankful on what you have. Some people like me only get a carport and that’s it. Or not even that. Have to park their car out on the street daily.
Your car looks like my buddy's car but we have big turbo 🤣🤣🤣
Big Turbo, Big Supercharger, it's all the same :-)
@@Bbeavis did your car make 276 at 15psi out of a 1.6 😁
@@garageworm17 Nah. Mines the 1.8 VVT
@@Bbeavis my car is a 1.8 not vvt but with my few goodies I'm faster than a stock vvt now
Please we will look under the car !....
What would you like to see Hartmut?
@@Bbeavis ...all under the Miata !
How could you say strut bar does nothing? Haha ok goof. Also strut bar might hit the afm on an early 1.6 depending on design.
I believe that the MX-5's double A-arm suspension design means there is not as significant of a force applied to the top of the shock tower as there would be in the case of something like a macpherson strut suspension setup. As such the strut bars are more of an inconvenience and mere engine bay bling than any kind of significant improvement in handling performance.