Originally Posted by holler mcdollar

^you don't know what your setup is?

if you have a downpipe + test pipe setup, find a cat and replace the test pipe with it.

if you have a downpipe/cat-delete in one (for example the dc sports downpipe), find a downpipe and cat to use and replace that...

Originally Posted by holler mcdollar

allow me a quote myself... you will fail emissions unless you do this: