i want it load

[bioskyline]

if you want it loud, just remove evrything from the cat back and run a pipe out under the door.....

[Sonyps307]

What would happen if u put a 3"
On a nonturbo

[bioskyline]

Originally Posted by Sonyps307

What would happen if u put a 3"
On a nonturbo

to big of exaust kills the back pressure and performance will suffer. to small has same effect. iirc lack of backpressue lets fresh air in the exaust system and will mess with the o/2 sensor, making you run to lean or rich i cant remember which one.

[907mge]

Install an exhaust diverter that you can open for loud exhaust and close when you need to be more civilized. And I find it funny that everyone agrees that 3in is far to big for the 7mge when my celica with a 1.8L comes stock with 2.5in.