Mafia member 46
Join Date: May 2005
Thanked 3 Times in 3 Posts
Originally Posted by dodeybob22
I think there is a resonator about a foot and a half from the turbo on the 6.7 pickups. I have unbolted the first cat and drove a couple miles before i bolted it back up, and it still was not very loud at all. This resonator could have a lot to do with it. I dont see why a guy couldnt pull this off and put a new downpipe on. I would think that as smart as these computers are it would fix itslef to run with the different backpressure. Somebody chime in and tell me how dumb i sound:shrug:
all those components are part of the emissions system, there is no resonator at the front. the first is an oxidation catalyst, then the diesel particulate filter ,and finally the catalytic converter (1st 2 for sure, not positive about the last). the problem with removing them is the fact that there are sensors before and after the DPF and the computer cannot work right w/o them (so far), and go into regen all the time (mileage will be in the toilet due to a ton of fuel being dumped to raise the EGT'sfor regen) or set the MIL.
Current: '07.5 2500 QC/SB ETJ/68RFE, 4x4, Fabtech 6" lift, KMC XD "Diesel" 20x10 wheels, Pro Comp X all terrain 37x13.5R20 tires, BDog P Pup AFE, MegacannonII, H&S Gen 1 DPF Delete, EGR unplugged. Dynoed 361hp/677tq 20090220
SOLD!'03.5 3500 SRW QC Dynoed 2/11/06 457hp/1002tq