Hello,
I will be purchasing a 95 prelude vtec h22 as soon as i sell my current car, and i was wondering, for most hp gain on all motor, with an exhaust how big should the pipe be? i am having it custom made, so i was thinkign of goin with the 60mm pipe that greddy uses, something like 2" 3/16ths. i was wondering if that would give the most hp gain, ill probably be buying a header and possibly a high flow cat if needed.
thanks
bryan

 

it depends on which way u plan going? whats your future plans for the car? forced induction or n/a?

 

umm for most hp gain on all motor i think that means n/a i would go w/2 1/4 inch piping 3 if you want to go turbo.

 

yeah, for now i plan on going all motor, that will last like 160k mi, and hten i think ill do a turbo rebuild, i know 2.5+ is for turbo and 2 1/4 inch is non turbo in terms of gain. but what i was wondering is 2 3/16ths (greddy size) better than 2 1/4. or am i stupid and they are the same size.
thanks
bryan

 

whats wrong with 2.5 piping for N/A? my friend has that on his car, no problems and it seems to be working great

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by blk97lude &raquo;</TD></TR><TR><TD CLASS="quote">whats wrong with 2.5 piping for N/A? my friend has that on his car, no problems and it seems to be working great</TD></TR></TABLE>

as far as i know 2.5 inch piping can actually make you lose horsepower becasue theres not enough backpressure, you only gain when you have a turbo. thats on my current car though, i could be wrong. i think this is a general idea though.
bryan

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Bryan-95prelude &raquo;</TD></TR><TR><TD CLASS="quote">

as far as i know 2.5 inch piping can actually make you lose horsepower becasue theres not enough backpressure, you only gain when you have a turbo. thats on my current car though, i could be wrong. i think this is a general idea though.
bryan</TD></TR></TABLE>

it would probably benefit you if you were running nitrous as well

 

2.5 piping doesnt make you loose any hp, going up to 3in without boost
would be a mistake but 2.5 should be fine. I have greddy evo and an very
satisfied but if I had it to do over again I would go with a custom 2.5 setup,
its cheaper and as effective. Kteller8 sells 2.5 kits i think and Dave from
SMSP suggested 2.5 as well and he makes one hell of a header so I will go
ahead and trust his taste in exhaust.

 

two and 3/16 is one 16th smaller than 2 1/4...go with 2.5 for all motor you'll lose low end torque but get more top end .

 

haha.. you DONT want backpressure...

if 2.25" is the way to go on a b16, i would think .6 more liters would call for a little bigger.. I would go with 2.5"

 

Thanks everyone for your input
bryan