JR2023
Junior Member
I've been having problems with the truck producing rpm's on take off on drive and reverse. In drive it lurches forward when you press the gas far enough for it to go. In reverse on a hill you have to press the gas halfway down for it to engage. Going downhill at approx 30mph the rpm fluctuates. The truck has a unlocked computer, aftermarket injectors, and a Magnusson supercharged boosted at 6lbs. I have had a p0420 cat defiency code. Is it a blocked converter?