Exhaust and tune help

[c1500deathtrap]

those headers look more friendly than the summit headers.

 

[Elroy]

i have the magnaflow headpipe/cats in stainless, not cheap but they work well, bigger than stock diam. but i have a 2500 7.4 , the stock cats were blocked so it was a big improvement, i have had 3 trucks tuned by black bear, my 96 2500 7.4, a 04 5.3 and my 2015 5.3, all were an improvement over stock with no problems