Tuner
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Joined: Jan 2018
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Tuner
Just bought a 2009 LMM Duramax of the sale so I wasn’t able to locate the owner of the truck to find out what all had been done to it. It has an exhaust with dpf delete, air dog lift pump, and a dsp5 switch.
My problem is I don’t know what tunes I have or if I have any. Also when I turn the switch all the way to 5 and press the gas the truck shakes and won’t rev. It’s somewhat like a rev limiter but at a very low rpm, the rest of the spots don’t do this. It well rev fine in every position except 5
Last edited by Bean843; Jan 20, 2018 at 12:31 PM. Reason: Add details
