Hi, all. I've had a persistent problem with my 01 Wolfsburg (AWW 5-speed) for about two years now. My wife has been driving it mostly (and never notices the problem), but I just bought her a new car, so this is my DD now. The car is basically bone-stock except for an APR chip, a Forge diverter valve (got tired of replacing diaphraghm valves) and the diode mod (after adding the chip, the car would always go into limp mode for overboost w/o it). It has 150K on the clock and aside from some serious lifter noise at hot idle, it's in great shape. I've recently replaced all 4 coilpacks, spark plugs, n75 valve, and EVERY pcv fitting. the problem is basically that the car responds erattically under hard acceleration about 50% of the time. sometimes it accelerates like a champ, other times it feels like it want's to go, but backs off and jumps back in(surges) in the 4500 rpm range. It's NEVER thrown a code for this problem. The problem existed before I put the chip in, so i've basically ruled that out. It almost feels like it's 1) losing boost, 2) losing fuel supply, or 3) somthing is funky with the drive-by-wire throttle (losing signal from the pedal?). Has anyone else here had a similar problem?