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when i first got my 05 durmax, the guy i bought it from said it had a "econtune" from banks. so i got on it a little just to see how she would do. engine lite came on. felt like all it wanted to do was just limp along. took it to OReillys and their code thingy said it was fuel rail issues. Ok... eventually, I got a hypertech to increase mpg. Anyways, programmed it to stock settings and again just barely stayed alive. Reprogrammed it to stage two. Same thing. so obvisously its a fuel rail issue. SO how does one fix this?
p.s. whoever said 20 hwy and 16.5 city doesnt have this truck. I baby the dam thing and still no difference. Somebody help me. This diesal is sucking my wallet dry...