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Old 11-18-2012, 11:53 AM   #21 (permalink)
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Default Re: stock exhaust vs open down pipe at 600plus awhp

I'm curious if you have/are able to test the GCTech Manifolds with this turbos vs stock. I don't think there are any numbers yet for them.
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Old 11-18-2012, 12:56 PM   #22 (permalink)
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Default Re: stock exhaust vs open down pipe at 600plus awhp

$25 per horse power.

Not bad at all.
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Old 11-18-2012, 02:44 PM   #23 (permalink)
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Default Re: stock exhaust vs open down pipe at 600plus awhp

So is this both tests with a stillen dp with stock catback, or is this a completely stock exhaust vs the stillen dp? The initial posts seemed ambiguous.
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Old 11-18-2012, 04:59 PM   #24 (permalink)
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Default Re: stock exhaust vs open down pipe at 600plus awhp

Both with the still downpipe. The only difference is with and without the cat back
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Old 11-18-2012, 05:03 PM   #25 (permalink)
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Default Re: stock exhaust vs open down pipe at 600plus awhp

Quote:
Originally Posted by VR3.9 View Post
So my cutout gave me 40hp. 360 vs 400.
I was there, saw it with my own eyes. hmmmm goodbye to my Tanabe catback maybelol. 16 awhp more is always good.
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Old 11-18-2012, 05:46 PM   #26 (permalink)
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Default Re: stock exhaust vs open down pipe at 600plus awhp

Cool to finally see some numbers. By any chance got a video? Bet it sounds badass.
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Old 11-19-2012, 09:20 AM   #27 (permalink)
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Default Re: stock exhaust vs open down pipe at 600plus awhp

Quote:
Originally Posted by ray pampena View Post
I'm not maxed out. For the test I did 2 runs back to back. 23psi.

Stillen downpipe no cats.

Full exhaust 595
Open downpipe meaning no catback 611

I'm winter e85 so I didn't bother cranking it up
So in both setups, you had no cats? Or just the open downpipe?

If so that is a pretty significant power drop by having stock exhaust.
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Old 11-19-2012, 09:57 AM   #28 (permalink)
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Default Re: stock exhaust vs open down pipe at 600plus awhp

Can you post the two dyno graphs?

Did you notice any appreciable difference in boost threshold and spool up?
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Old 11-19-2012, 10:43 AM   #29 (permalink)
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Default Re: stock exhaust vs open down pipe at 600plus awhp

Thats actually not a huge difference in power at that power level. If you could say a typical aftermarket catback might lose you around 5-10awhp, then running the stock catback with an aftermarket downpipe and no cats is not killing you at anything under 600awhp.

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Old 11-19-2012, 10:52 AM   #30 (permalink)
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Default Re: stock exhaust vs open down pipe at 600plus awhp

Interesting...
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