I wanna ask you guys which exhaust is quieter, the Cattman or the Greddy SP2?. And which one would be a better choice?.

 

I have heard that the cattman is quieter, especially more so compared to when you get a y-pipe. The cattmann catback coupled with a cattman y-pipe I have heard is the quietest combination they have out today. I've had my GReddy SP2 for about a year now, and I am very happy with it. It was quiet before I added my y-pipe, now it's pretty loud.

 

someone told me the sp2 is quieter.

 

i heard the SP2 was quiter without a y-pipe, but with one, the cattman is quieter. which one is deeper? or both pretty close?