So my stage 2 cars cat **** the bed came apart on inside. I have a vibrant exhaust that was on the car when I bought it. Does anyone know if its 2.5" or 3" ? Also Im looking at zzp more than likely. Any of you have the midlength header downpipe combo? If so does it need a tune? And what's up with the primaries size sorry newb questions.... If I get catless Im guessing ill throw a code? Thanks guys

 

So I got the midlength header and downpipe installed. With the vibrant catback car sounds amazing. Gm only charged me $144 with manifold gasket installed couldn't be more happy. I recommend this exhaust combo to everyone...

 

Did you go with a 2.5" or the 3"?

 

2.5