04.5 Dmax, surges at idle, not to bad though. When im in gear (at a stop light) it surges terribly. Not all the time though.... Its intermittent.. When it surges in gear its bad, enough to move the truck... Not sure whats going on, no matter how i have it tunes with EFI live it still does it. Truck didnt do it for like 2 months after I bought it, its been doing it for a good 5 months now... Any ideas??? Could the need for a new fuel filter do that in a dmax? Also I have watched my pids while it occurs and my rail pressure jumps maybe 1000psi. Any help is greatly appreciated.