Guys,
Im looking to put high flow cats on and change out my Y pipe. I want to keep everything else stock,and use the rest of the stock parts.

What would you guys say to use as far as buying a Y pipe? Ive sen Stillen's and Nismo...anymore out there which will bolt up with my factory stuff?

Thanks,
Mike

 

I recommend the Japtrix y-pipe. I installed it and my Helix test pipes at the same time. This combo yielded me 10 whp and 15 wtq. I ran it with my stock exhaust system till just recently that i added the Fujitsubo exhaust.

 

+1