i just had a new exhaust system put on the truck while it was on the houst i looked couldnt see it as it only afex the number 1 and 2 cyl the reason im asking when i run the truck about 55 or 60 for a while it starts acting like its loading up and i was thinking that flapper was closing and causign the problem... i guess ill have to split the exhust so i can get to it thanks for all the great info on this motor
