Running no muffler/straight pipe vs aftermarket system
#16
#18
I don't have any low end torque loss, and im running 2.5" true dual straights with an x-pipe turned out lightning style with 3.5x18 tips. Watch my vids if you want to hear it, mine only came with the 2 cats because it was built late enough in 05. And yes that is my truck breaking traction with 10ply 265/70/r17's (50lbs each)
#19
#20