new to site today. just changed coil packs and plugs and cleaned intercooler. Before the change truck was idling fine but the pick-up was terrible. After change truck flew for 2 days and now it is back to same problem. Only mods on the truck are diablo sport tuner and new plugs and coil packs. Any ideas???

 

what COPs are you using? stock replacement? aftermarket? What tune are you using? and what plugs?

 

granatelli cop's, ngk iridium plugs, 90mm maf performnce tune

 

has the truck been upgraded to a 90mm maf, or does it still have the stock 80mm maf?