2013 Chevy 2500HD Cat-Back MBRP exhaust
Arrived quickly as usual from AutoAnything. Damage free in sturdy box. Install was quick and easy - let me tell you, the hardest part was cutting the old bolts to unhook the old system from the cat. Sounds nice with deep mellow tone. I did not do any dyno, just swapped it to help in towing my travel trailer with a little HP and torque.
5.3 2013 Silverado
I play proball and my buddy on my team has the doug thorley longtubes on his 09 6.2 silverado and he talked about it helping more with Power than even his Tuner. He wasn't lying. As far as installation goes. Just take your time and do it right. Take a day and do it right and it's not bad at all. Once you get the stock headers off putting the new ones on is not bad. Use PB blaster to loosen old headers. Much easier after