2.5" downpipe becomming a restriction with my Precision Turbo?

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Oct 20, 2003 | 02:03 PM

I Like Boost

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Joined: Jun 2002

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From: FT. Lauderdale, Florida, USA

2.5" downpipe becomming a restriction with my Precision Turbo?

I have a SC52 (SC526376 60 trim T350 .63 76) turbo on my built b18c. i thought the exhaust a/r was .63 but i sware it had a .83 stamped on it. Currently running 16psi (340whp) I am wondering if my downpipe is to restrictive for such big of a turbo. Spool up time is laggy but not that bad full boost around 5000rpm.

Reason is because soon i am going to get it tuned on c16 and going for 500whp. Is my downpipe going to be a problem and am i loseing power because of it right now. Thanks

Oct 20, 2003 | 02:06 PM

.RTErnie

Honda-Tech Member

Joined: May 2002

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From: BeLlInGhAm, Wa

Re: 2.5" downpipe becomming a restriction with my Precision Turbo? (IMPULSE B18C-T)

IF you have any resistance with a turbo....thats not good. 3" would be better. If you need a 3" downpipe, contact me I'd be interested in making you one.