Originally Posted by 2013F250Tank
Wondered about doing this if i ever got a non delete able truck. Wouldnt there just be a sensor for too much back pressure to send it into regen mode? I ran an open downpipe for a few weeks. WOULDN'T recommend it, heats up trans, cooks wires and puts soot over everything. WAY too loud also
If you hollowed out the DPF there would be lower backpressure than stock and you'd want to disconnect all the sensors etc because you're basically jerry rigging a straight pipe that looks legal still.
The open downpipe from my experience definitely puts soot all over the undercarriage and starts to become noticeable on the back window after a few weeks without a wash but I didn't see any higher trans temps and definitely haven't seen any melted wires anywhere so I'm curious if you actually observed either of those happening on your truck and if so which wires melted/pics.
It is crazy turbo whoosh sounds at any speed and crazy wastegate squeal but exhaust note isn't very loud unless you mash on the pedal hard. I've been running open downpipe for 20k miles on mine without issue.