2.5" exhaust too small????? - Performance Forum

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2.5" exhaust too small?????
Wednesday, July 06, 2005 7:39 PM
hmm, well i dont really know how to put this, so ill try my best at explaining it.

so, when im at part throttle, like -5 vac on boost gauge, my exhaust sounds like it should. like it did before the s/c. but when i step on it, it seems like there is too much backpressure or something cause it sounds jumpy and stuff. i cant quite explain it very well. but i tried lol. is it just me or is there something maybe letting go in the motor, cause it never sounded like that before. help please lol. thanks



2000 Camaro V6.
| SLP Loudmouth | CAI Intake | HID's |



Re: 2.5" exhaust too small?????
Wednesday, July 06, 2005 8:12 PM
I assume you are running 2.25" piping currently then? If you run any sort of forced induction, I would suggest you go up to atleast 2.5" piping.



Re: 2.5" exhaust too small?????
Wednesday, July 06, 2005 8:57 PM
no i am running 2.5"



2000 Camaro V6.
| SLP Loudmouth | CAI Intake | HID's |


Re: 2.5" exhaust too small?????
Wednesday, July 06, 2005 9:19 PM
i am running full 2.5" header back exhaust with a Magna flow cat and the biggest resonator i could fit and it sound nice and dosent seem like there is very much back pressure at all... The big resonator is because i HATE loud exahust.. i would rather more restrictive then loud...



Re: 2.5" exhaust too small?????
Wednesday, July 06, 2005 10:38 PM
I'd say 2.5-3" would be perfect for a boosted engine. I know a lot of 2.0's that are running 3" exhaust straight back from the downpipe.

I doubt it's the problem, but you might have a clogged cat or one that's gettin there?


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John Leahy
'01 Cavalier Z24 - 5Speed

MaxThrottle.Com
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