Too much boost?

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04-03-2003, 07:10 PM

aron2063

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Too much boost?

im about to install an air-fuel guage, and the only fuel management i have is an fmu, im running 5PSI on my 99 civic SI and i was wondering how much more boost i have run with stock internals if its running rich??

04-03-2003, 07:12 PM

aron2063

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Re:Too much boost?

blarble

04-03-2003, 07:14 PM

Tad

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Re:Too much boost?

get a new fuel pump, definetely.
you'll need it no matter what kind of fuel setup you go for in the future, fmu, or friggin hondata.

but yeah.. stick to like 5-7psi on ur setup

04-03-2003, 07:15 PM

Anton

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Re:Too much boost?

5psi is nothing, you should be fine

04-03-2003, 07:16 PM

aron2063

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Re:Too much boost?

is a new fuel pump something i need to get right away if i go higher or will my stock pump hold up for a while?

04-03-2003, 07:23 PM

aron2063

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Re:Too much boost?

blarble shmarble

04-03-2003, 07:40 PM

aron2063

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Re:Too much boost?

is a new fuel pump something i need to get right away if i go higher or will my stock pump hold up for a while?

04-04-2003, 01:12 AM

Dr_Drache

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Re:Too much boost?

it might hold up, but why wait?

04-04-2003, 01:19 AM

J-SMITH69

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Re:Too much boost?

no you do not NEED a new fuel pump. some people have very bad problems with higher output fuel pumps raising the fuel pressure and causing a very rich condition in non boost situations. bob kennedey aka most hp on a stock d15a3, ran 14psi with stock fuel pump, modified fuel pressure regulator and 450cc injectors.