Last time I passed smog I barely passed. All my numbers were very close to the limit. I think it may have been cuz of my converters or possibly a need for a tune up. Would going with true duals w/ an X-pipe make passing the sniffer better, worse, or no change to emissions? I am running pacesetter shorty headers with emissions hook ups and carsound cats.

 

ttt

 

As long as u have cats and tail pipes out the back i don't see why you'd fail, unless it's time for a tune up.

 

Depending on were you live going duels might not pass the visual inspection. Thats somthing to think about. As for helping it pass it might if your getting new cats but other than that it should make no differance.