boost pattern with downpipe

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09-18-01, 01:41 PM

MattRX7

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boost pattern with downpipe

If I have a downpipe as my only mod, would the boost pattern change at all? Or should it stay at 10-8-10? I'm getting one put on soon and wanted to know what to expect.
Thanks!

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09-18-01, 08:01 PM

pp13bnos

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My pattern changed just slightly to just over 10psi, until i added an intake. Then it was a 11-14-11 on the dyno. But the good news was that the car made 233 or 235 rwhp at 11psi.

Later, CJ

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09-19-01, 04:52 AM

LT1-7

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all I had was a catback and an intake. When I installed the DP my boost went from 11psi to 16. Be carefull!!

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09-19-01, 05:30 AM

Tad

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this is just a hypothesis,
but i'm guessing if you have a catalytic converter in there
somewhere, your boost should be ok.

But get a boost guage to be sure!!! you dont want to chance it.