Quote from: BiGMaC on February 21, 2015, 11:02:20 PM
Is there a reason you want to replace the stock with a new cat back other than just to do it?
No reason or desire to replace anything I don't need to. My concern was with catted DP's, I would still have some restriction on engine breathing. From what you say and others, just the DP's and x-pipe increase flow AND maintain a quiet exhaust.
No need to advertise, just stomp it and go! My 67 RS/SS has built 383 engine. A fire breathing V8 with no noise. At idle, you can only hear a little lobe from cam and whistle from timing gears, but only if standing next to car. But when the hammer drops, the bowels break. So I will maintain the entire stock system except DP's and x-pipe.
As for emissions testing, we get it all here in California. SO with catted pipes, I will have LMS modify my tune accordingly. And since even with no tune, returning car to stock for service by Ford dealer should not be an issue. If questioned, I will claim ignorance and that car must have had it already when I purchased it.
