Hi i am about to buy an exhaust for my stock 2003 350z, but before i have a question to you guys. The piping of the exhaust is 3inch it's ok or i will lose some performance with my stock car ???

Sorry for my english :P

Thx for the answer.

350z-Sim

 

3" is way tooo small. You need to get a 5" exhaust with extra cats

 

It should be fine.

 

Back pressure will get all discombobulated.

 

good 2 go man.