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Old 11-17-2012, 03:19 PM   #1 (permalink)
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Default stock exhaust vs open down pipe at 600plus awhp

= 16whp
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Old 11-17-2012, 03:30 PM   #2 (permalink)
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Default Re: stock exhaust vs open down pipe at 600plus awhp

Wow, not much huh. Thanks for running this test Ray!
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Old 11-17-2012, 03:43 PM   #3 (permalink)
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Default Re: stock exhaust vs open down pipe at 600plus awhp

So my cutout gave me 40hp. 360 vs 400. So the facts may be that the cut out being on with the Stock exhaust close may be costing me 24awhp. Thanks Ray.... I think. lol
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Old 11-17-2012, 03:50 PM   #4 (permalink)
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Default Re: stock exhaust vs open down pipe at 600plus awhp

haha wow you got 40??
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Old 11-17-2012, 04:02 PM   #5 (permalink)
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Default Re: stock exhaust vs open down pipe at 600plus awhp

thanks for the info ray, but this is on your basially maxed out DR750s, right? they can only flow so much
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Old 11-17-2012, 04:16 PM   #6 (permalink)
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Default Re: stock exhaust vs open down pipe at 600plus awhp

Was it a stock downpipe that was open or a larger aftermarket one? And I just run open o2s lol. And were there pre cats or not?
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Old 11-17-2012, 04:17 PM   #7 (permalink)
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Default Re: stock exhaust vs open down pipe at 600plus awhp

^^^ Somethig along those lines I though of. How would the system be affected with bigger frame turbos and tubular manifolds?
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Old 11-17-2012, 04:35 PM   #8 (permalink)
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Default Re: stock exhaust vs open down pipe at 600plus awhp

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
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Old 11-17-2012, 05:13 PM   #9 (permalink)
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Default Re: stock exhaust vs open down pipe at 600plus awhp

damn you made 600whp with dr750 and only 23 psi?
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Old 11-17-2012, 06:37 PM   #10 (permalink)
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Default Re: stock exhaust vs open down pipe at 600plus awhp

Finally some real info...

And DR750's are such a good turbo...

Jason
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