running a downpipe and testpipe with the stock catback

[flooredstealth]

if i ran a test pipe and downpipe and kept the stock exhaust, would i just be robbing myself of the little amount of power that the TP and DP would be creating? or would i still feel the gain in power? and how would the sound compare between this and if i put a custom exhaust on also?

[Tool Man]

I could feel the change, and I really liked the sound, not to loud, just loud enough.

[s5pitfire]

I'm sure you'll still feel a gain in power just not as much as dp+tp+cback. More of a gain than if you went with cat back only
I'm curious as to how just headers and test pipe sound with stock cat back, sound and performance wise
But that cat back sure is a giant blob of metal

[DBLerman]

Our stock cat-backs really aren't THAT restrictive...