hey guys .... im wondering what size cat/dpf delete pipe i should buy... my truck and exhaust is currently stock... i picked up a SCT livewire and need to get a delete pipe... should i get a 3.5" with bungs or should i opt for the 4" with bungs which both marry up to the rear of the stock exhaust... im looking at the flo-pro and the afe... any help is appreciated!..thanks guys!

 

I doubt that it will matter, but I think the 4" pipe is the way to go.

 

I figured that...but if i do eventually change the rear i guess it would be better to up it to a 4"...so maybe i know the answer to my own question....i wasnt sure if there were any negatives to doing so