so Im going SR...

[tt99ol]

if you want to change your turbo to manifold gasket once a month, then by all means use an exhaust that is less than 3" but if you want faster spool, ~10 psi w/out a boost controller of any kind, better fuel economy, and a nice exhaust note then i would suggest getting a turbo back exhaust, ive been through a few turbo to manifold gaskets myself, with a custom mandrel bent 2.5" exhaust and none with a 3" so thats my take on it, more pro's then con's

[fliprayzin240sx]

Originally Posted by tt99ol

if you want to change your turbo to manifold gasket once a month, then by all means use an exhaust that is less than 3" but if you want faster spool, ~10 psi w/out a boost controller of any kind, better fuel economy, and a nice exhaust note then i would suggest getting a turbo back exhaust, ive been through a few turbo to manifold gaskets myself, with a custom mandrel bent 2.5" exhaust and none with a 3" so thats my take on it, more pro's then con's

You gotta have 3" or else your gonna blow your gaskets? You pulling bullshiet from NICO again??? Lets do some thinking here...stock Silvias run 2.5" exhaust, I dont hear them randomly blowing manifold gaskets. Check your info before you start spurting random shiet like that. Your popping your gasket because A) Your shiets warped B) You need better engine mounts C) Your exhaust hangers suck.

Size of you exhaust piping has absolutely nothing to do with it.

To the OP: If your gonna run 2.5 piping, just remember that the straighter the pipes the better and dumb the cat, the cats what causes the most backpressure more than anything.

[DALAZ_68]

Originally Posted by tt99ol

if you want to change your turbo to manifold gasket once a month, then by all means use an exhaust that is less than 3" but if you want faster spool, ~10 psi w/out a boost controller of any kind, better fuel economy, and a nice exhaust note then i would suggest getting a turbo back exhaust, ive been through a few turbo to manifold gaskets myself, with a custom mandrel bent 2.5" exhaust and none with a 3" so thats my take on it, more pro's then con's

well like i said ill eventually upgrade...right now i just need a motor in there stat

once done ill upgrade wut i can...not gonna go to crazy ya know

fliprayzin240sx +1 respect good sir....my point exactly...as far as Cat goes though...im thinking of running one of those solonoid...the cylinder looking thing...just to avoid some noise polution

[JDMwannaBE]

Originally Posted by tt99ol

if you want to change your turbo to manifold gasket once a month, then by all means use an exhaust that is less than 3" but if you want faster spool, ~10 psi w/out a boost controller of any kind, better fuel economy, and a nice exhaust note then i would suggest getting a turbo back exhaust, ive been through a few turbo to manifold gaskets myself, with a custom mandrel bent 2.5" exhaust and none with a 3" so thats my take on it, more pro's then con's

this is true, after i installed my exhaust, i made 10.8 psi without a boost controller. before it was slightly more than 7psi. it made me happy......