Well I just got started with the mods, the mods in my sig aren't even on the car yet, but it all should be here by Thursday. I want more, this stuff is addicting I just want a few more bolt-ons. I have the slp loudmouth cat-back; should i get their y-pipe or will it not make a difference? Any advice for my next mods?
Thanks.

 

unless your taking off your cars, the y-pipe really isnt worth a thing

 

It will not make much difference, unless you add headers. I would go with headers next, so either save up, or buy some long tubes.