ok so i was looking at my exhaust and saw that its high flow of 1.5 inches goes pretty much straight back then before the rear suspension it has a horrible 90 up and a few other bad ideas, basicly my question is it a law that you exhaust go over you rear suspension, its not for ground clearence because from the down pipe to the cat is actually lower than the axel back. also it wont hit any thing if the suspension flexes.

ok sorry if that was confusing, why does it need to go above rear suspension.

it might be a state thing idk, im in nh if anyone feels like reading political jargon

thanks

you can redo your suspension to go under axle.
I prefer it as there are less bends, shorter over all length of pipe and leads to better flow.

I've had it, Defgeph, i think p2 also has under axle

I am also going under axle. It doesn't hit any suspension components either.

meh, i went under before and will again. no issues

ok cool, but why do they make it to go over the axel? there must be some reason...

http://i14.ebayimg.com/04/i/000/cf/dd/76c5_1.JPG

the last pipe, is.... like double the length of the others... don't you want all equal lengths?

i heard something about back pressure waves, or something like that.. and idealy you want everything equal so everything cancels out and there is no resonant wave


also http://ebay-img.1aauto.com/EEM/1AEEM00272.jpg
umm is this even close to a good idea, all port nearly immediately meet?

This post has been edited by captainpyro1: Apr 22, 2008 - 11:03 AM

exhaust gas flow theory is very in depth and more involved than the typical conversation here, much less do i think many of us here know much about it.

there is tube length/firing order/ect ect but its negate able in this situation

>


this is very true, I AM NOT driving a 1000 whp 350z maybe then ill worry about it...