Originally Posted by S///TH
Other than the fact that you have to cut the original pipes is there any material difference between intalling a set of "test pipes" vs. purchasing lets say the Challenge Sport X-Pipe?
I realize your can't go back to OEM but there is a significant price difference enough to pay for a tune and then some.
I really dont think so.
You're basically doing the same thing installing the Challenge sport will do since the sport has HFCs at the secondary position like the OEM x-pipe.
I'm thinking the sound may be a little nicer/louder with the challenge pipe.