I like Stillen products, and was thinking about buying their Y-pipe, and cat-back exhaust, but I have been seeing different posts about stillen, cattman, and warpspeed. Which is the best combination and will yield max performance

 

Performance wise, all ypipes should be about the same, its up to you as to price/quality that you choose.

Cat back exhausts with either a hiflow cat (or no cat) yield the best performance.. so you can piece one together, or u can get a GReddy/Apexi.. or custom make one.

 

if i want a QUIET exhaust... is it even worth getting an exhaust system with a silencer? and would the silencer make a difference even? thanks

 

GReddy SP cat-back with new stillen
2piece Y-pip. very quiet.

 

i heard the y2k muffler makes good power with it,s multi chamber system cant say dont have one but it sounds nice . jo broken motor i need to see that vq30de when you finish it sound,s like a good idea post pic when done cool? good luck with the project hope it sets a example.peace