Just installed the exhaust system. 4 inch with the muffler delete pipe and 2.25 inch crossover pipe and hi temp gaskets. WOW what a difference in power and sound. Ive heard cummins powered trucks quieter than mine. Some people even ask if I did a Cummins...
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From: cody H.

Was given a new PDM when I bought the truck but did 15K miles before I changed it. Bought the Heat Sync and #9 resistor to do the job. Apparently the PDM was a lot worse than I though because the truck runs like a jet now and I haven't even done the 50...
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From: K3 Chris