Between the cattman y and the stillen y, which one is louder, and which one sounds better.

 

Yes, I want to know too. I thought Cattman was absolutely silent without the intake. Am I wrong?

 

i don't think my stillen one is loud.

 

Cattman SS is the best, from what ive heard, in both
fitment and noise level.

 

i got a cattman y-pipe and i dont hear a thing. Except for the ppl on the sidewalk yelling "i'm walking here!!!" hehe

 

I have a stillen y-pipe and intake, no aftermarket exhaust. Under normal driving it is pretty quiet, under full throttle the stillen y-pipe will make a hissing sound, but other than that it is just the intake and engine sound. I hope this helps