4" or 5" exhaust
Gathering parts for some performance upgrades. Truck currently has SCT livewire, Magnaflow exhaust w/ DPF delete, stock air cleaner. Changing to this; H&S mini-max, S&B cai, EGR delete, coolant filter, new exhaust with downpipe and CAT/DPF delete.
Question is what size downpipe and exhaust... I think 4" downpipe, but is there any advantage in performance between the 4" and 5" exhaust?
I will probably run straight pipe, and really have no future plans for more power, just reliability, so maybe headstuds & gaskets (if/when I do headstuds, will clean the intake too)
Oh yeah, looking in to the CCV deal also...