Re: 2004 F350 6.0 - Turbo Noise - Cat Delete, Muffler Delete
You are correct. If you run a 4 or 5 in aftermarket straight pipe (replacing stock downpipe) it will be even louder!
I went with a muffler on mine, on long trips it got kinda annoying...
Sent from my HTC6535LVW using Tapatalk