Longhauler
Member
This weekend I was towing my 12,000lbs 5th wheel and while on cruise traveling 60mph which is about 1700rpms with tow/haul and exhaust brake one when I would go up an over pass of small hill in the road the truck would shutter. If I took it off cruise it wouldn't do this. Has anyone had this happen to them. I also have the smarty jr with delete pipe.