GR Supra 101: Routes to big power

[Mr. Jonathan]

1. Dully noted. Yeah you're right about that one. But when you say pdf, could please elaborate more? An example would be nice.

2. I completely forgot about bimmercode. As I was writing this I just kept adding a bunch of things, and some times I lost track. I will make sure to add a section for bimmercode.

An adobe/PDF document. Or you can go word document, it’s up to you.

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[zrk]

I KNEW @zrk WAS INVOLVED

I wasn’t at first but now I am. ?

 

[D3ad_Hand]

An adobe/PDF document. Or you can go word document, it’s up to you.

You mean link to a website which has the thread as a pdf?

 

[D3ad_Hand]

I wasn’t at first but now I am. ?

Btw zack, how do I get this pinned as to not get drowned by other threads?

 

[XtremeMaC]

Btw zack, how do I get this pinned as to not get drowned by other threads?

@Guff , @Supra93

 

[XtremeMaC]

You mean link to a website which has the thread as a pdf?

Attach the 1st post as PDF in the 1st post ..
Yet, depending on how often you update this, you'll have to enter a version/date...

 

[V8KillaMKV]

Thank you for doing this, it is very informative. Thank you for taking your time and sharing this info.

 

[Thraxbert]

Re: exhaust (@zrk)

We have dyno proof of a car picking up 45WHP on a Pure 800, on the same tune + map, just by switching from the OEM 3.15" downpipe and RK Signature Titanium exhaust setup to a true 4" downpipe and 4" exhaust solution. Stock turbo has shown more like 10-15 WHP gain with the switch to a true 4" exhaust, which is still nothing to sneeze at.

Similar results have been demonstrated in 2011 on the Mk4 Supra.

3.0" Downpipe + 3.0" Exhaust @ 19 PSI = 507 WHP
3.0" Downpipe + 3.5" Exhaust @ 19 PSI = 527 WHP
3.5" Downpipe + 3.0" Exhaust @ 19 PSI = 567 WHP
3.5" Downpipe + 3.5" Exhaust @ 19 PSI = 610 WHP

Why is this happening? Because the flow of air and water is functionally limited by the narrowest section in the exhaust. The OEM downpipe has an exit that's 3.15", and almost all the aftermarket exhausts hook up to that 3.15", which makes the whole system flow like a 3.15" exhaust. It doesn't matter if the downpipe is 5" and the exhaust is 3.5", because if that OEM 3.15" section is there, then that's what you're gonna get for flow.

AFAIK, only Remnant Performance Leviathan (comes with DP), Boostin Performance Heritage (option + you provide DP), and ETS Exhaust (+ their DP) offer a true 4" exhaust from the turbo back. If you're getting anything smaller, you're leaving performance on the table. Even with the stock turbo.

 

[Mr. Jonathan]

You mean link to a website which has the thread as a pdf?

No, I’m under the impression you can attach a PDF to a post on this forum

 

[BMWAF]

Since the forums is being ever more active and new people are getting their supra's I thought I'd make this thread as simple yet very informative way to start out modding your supra, and lessen the load on questions asked so frequently yet answered so simply.

...

You're doing gods work. Do you think it would be worth adding JB+ as an upgrade path and show its relative gains?

 

[D3ad_Hand]

No, I’m under the impression you can attach a PDF to a post on this forum

Attach the 1st post as PDF in the 1st post ..
Yet, depending on how often you update this, you'll have to enter a version/date...

Yeah sounds good. I want to add a few more things and get feedback as well. After that I want to keep updating the thread and the pdf as well.

@Guff , @Supra93

Hopefully @Guff and @Supra93 can help me with this.

 

[D3ad_Hand]

Re: exhaust (@zrk)

We have dyno proof of a car picking up 45WHP on a Pure 800, on the same tune + map, just by switching from the OEM 3.15" downpipe and RK Signature Titanium exhaust setup to a true 4" downpipe and 4" exhaust solution. Stock turbo has shown more like 10-15 WHP gain with the switch to a true 4" exhaust, which is still nothing to sneeze at.

Similar results have been demonstrated in 2011 on the Mk4 Supra.

3.0" Downpipe + 3.0" Exhaust @ 19 PSI = 507 WHP
3.0" Downpipe + 3.5" Exhaust @ 19 PSI = 527 WHP
3.5" Downpipe + 3.0" Exhaust @ 19 PSI = 567 WHP
3.5" Downpipe + 3.5" Exhaust @ 19 PSI = 610 WHP

Why is this happening? Because the flow of air and water is functionally limited by the narrowest section in the exhaust. The OEM downpipe has an exit that's 3.15", and almost all the aftermarket exhausts hook up to that 3.15", which makes the whole system flow like a 3.15" exhaust. It doesn't matter if the downpipe is 5" and the exhaust is 3.5", because if that OEM 3.15" section is there, then that's what you're gonna get for flow.

AFAIK, only Remnant Performance Leviathan, Boostin Performance Heritage (option), and ETS Exhaust + Downpipe offer a true 4" exhaust from the turbo back. If you're getting anything smaller, you're leaving performance on the table. Even with the stock turbo.

I will add that to the thread. Thank you for the information, much appreciated.

 

[D3ad_Hand]

You're doing gods work. Do you think it would be worth adding JB+ as an upgrade path and show its relative gains?

Thank you for doing this, it is very informative. Thank you for taking your time and sharing this info.

you're welcome and thank you for the feed back. I will definitely add a section for JB+ and bimmercode as well.

 

[NINaudio]

As someone who just put their deposit down on a Supra to be delivered by the end of June thanks so much for this!

 

[D3ad_Hand]

You're doing gods work. Do you think it would be worth adding JB+ as an upgrade path and show its relative gains?

Two things.
1) You might want to create this informational pamphlet and post iterations to this thread as a PDF. That will free up the posts for general replies, feedback, banter, arguments, insults, death threats, etc…Especially as the content grows. Readers might find it difficult to zero in on the latest and greatest update if there is a bunch of inaccurate claims and dick measuring comments throughout the many pages this thread will most likely become.
2) Where’s the BimmerCode love? There is a BimmerCode PDF on this forum, some where. Not sure the last time it was updated or if the author is still on the forum. But, if you consolidated with what you’re creating, I’m sure folks will find it helpful.

Update:

I added a section for JB+. Still debating on whether to add bimmer code or not as the focus of the thread is mostly performance. I will let you know if I add bimmer code

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