Ok mods in sig. I have pacesetter header going to a trush glasspack that connects to the stock Y-pipe. The only reason I havent upgraded it yet is because I really dont want a really loud car, but if the power difference is significant I would probably do it. What are everyones thoughts? And would a larger diameter Y-pipe make my car that much louder?

 

ya, the stock y pipe is ridculously small. i had a stock ypipe going to some high flow mufflers...when i got a bigger ypipe it made a big difference...you need to dump it.

 

Was your car noticably louder after you installed it?

 

Ok Doty, It all depends on the exhaust u get, if u get an exhaust like an N1 its not really that loud, youve heard my car. But a straight open exhaust w/ no muffler will be really f-ing loud. Just get something w/ a muffler.

 

im not sure, i got new mufflers when i got my ypipe done, it wasnt louder at low rpms and normal driving, but it screams when you get on it

 

You're exhaust can only flow as well as your smallest pipe. Therefore, you might wanna change the y-pipe out for larger diameter pipes.

 

Mufflers are a must have on these cars.