Hey everyone I have an early 99 7.3 I use the truck for my daily driver so its a stock 4x4 ride height and everything is stock except the air filter I installed a 6637. I want to free up the exhaust as its original and I plan on putting a 7" stack in the bed. My question is should I replace the stock downpipe with a d.e. 4" dp? Is it going to be worth it to get a 4" dp to a straight pipe and a 4-5" than a 90į and straight out a single 7" stack? Or should I just chop off the muffler and tailpipe and run a 90 up.to the stack ? Its only a daily and all I want to do is get MPG's. And of coarse satisfy my cool meter for a DD
Imo if you don't throw a bigger do in it you are robbing benefits of having a new exhaust, mine if 4" all the way, I've put in a 4 dp to 5" exhaust ending in dual 6" stacks and he was happy with it, the main restriction to a straight exhaust is your do, throw in the biggest one that fits.
02 250 CCLB, 6 spd, PHP Phoenix, ISSPROs, AFE/6637 intake, 4" DE straight exhaust, WW, coolant filter with ELC, AIH delete, ebpv delete, bellowed uppies, 4" on 35's and racelines To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.