If I understand u correctly --Yeah ALL I got was a 2 in. pipe from my stock cat bac for now. It gives me a nice low growl--- Ill be taking out my cat and installing Another 2in from my headers back soon.... Just for a little extra punch B4 I get my HS CAI and HeaderNiss200SXGTR said:Think about this way.. you are getting some mEGA backpressure.. you might as well just leave it stock..
Can you get a 2" exaust pipe from the cat converter stock? if you can get it from stock cat.. then i will.. tell me whats up