Hello,
I am planning to customize my 2001 I30 and increase its performance a little bit so I'm gonna buy a Magnaflow muffler which is: http://www.autoanything.com/exhausts...A2695A0A0.aspx

So could you please tell me about a good aftermarket resonator and priced about $100 or less? I'm looking for a resonator that increases my car's performance and has not that much sound.


The first step that I did for my car customize project was buying G35 Coupe 18" wheels.

 

Doing an aftermarket muffler and resonator isn't going to net you any gains, just some good sound.

Fit the biggest resonator you can in there. Maybe a 22" Magnaflow?

 

So how can I gain more horsepower? What should I do if the muffler, resonator and new pipes won't give me any performance difference?

Thank you

 

Look into getting a y-pipe.