Took my car today to see where my leak was and found that its in the flex section so i need a new y-pipe. Should i get the 3inch y-pipe or just a regular 2.5 inch. The car is supercharged and has the cattman catback.

 

3inch is better for boost. Is your cur tuned, if not after the 3 inch y-pipe might be a good idea to get it tuned.

 

Its not tuned right now, i have the vafc2 sitting in my room. Will the 3inch bolt up to the 2.5in cat back?

 

i have a stillen for sale... hehe

 

I can take off my 2.5" if you want. It already has a bung for an wideband and a tap for an egt. It might take me a week or so to get it off.

 

PM me about the Stillen Y-Pipe.

Andrei