Join Date: Nov 2014
Thanked 3,492 Times in 2,559 Posts
You should be cautious. If the truck had a h&s and the PO just pulled the head unit, the timing goes to default. Quick ticket to a new head gasket. Hopefully for your sake it was good quality tuning and no harm will come.
What of trans tuning? Is it also tuned?
Scooty Puff Sr - 2016 3500 CCLB
Truckasaurus - 2010 2500 CCSB -sold