Well guys I finally broke down and bought an 04 common rail. (Still have the 12v) it has 110, 000 miles bunch of new parts with reciepts. The truck has a cold air intake 4 inch turbo back exhaust and a banks 6 gun with a pda and speedloader. I run the truck on stage 3 runs great about 20mpg. My question is.. when the truck is warm and idling it idles nice and smooth and then start to do a little lope. Not a big stupd tune lope just a quick little lope, then right back to smooth idle. Is this normal? Sorry if its a dumb question.. really really new to the common rail engine.