Originally Posted by rlc0939
I also need help on this subject. I have a '08 QC. I want to know is there an advantage to having duals after the muffler or is a single 3" pipe just as effective. I do not care if there is 2 pipes or 1 coming out of the back of my truck as long as the end result is the same and the system is not annoyingly loud( I know that is subjective). My local exhaust shop told me they can replace what I have with a 3" Magnaflow and run a new 3" pipe out to the stock location for $190. How load in the cab would this be?
good price by the way, this configuration droned like a mutha in my qc...however, by simply changing the part after the muffler to dumped over axle, all the drone is gone and it is quieter in the cab (go figure since dumped exhaust is usually louder)