superdutyman97
New member
I just bought this truck about a month ago, put a 4 inch downpipe back exhaust on it yesterday and now it's blowing grayish blue smoke at takeoff. Never smoked a bit before the exhaust. Could it just be burning crap out of the downpipe as I done away with the resonator with the exhaust install. Or should I be lookin for something more serious. It runs perfect and I just put 2 bottles of rev x through it about 1500 miles ago. It's only got 63k miles on it and is bone stock other than the exhaust. Any help would be great.