Ok guys i have a r32 auto rb20det....umm i have been having the same probs....i was running a stock air box and it has had the prob and i am running a k&n pod atm and it still does...i am running irraway7 plugs in it, new oil, filter, fuel filter, i have clean everything, the acc value the air reg, the throttle body, the turbo. People say it could be the afm, the fuel pump earth, the lack of octane in the fuel, firty fuel.....atm it is not constant. If i dont drive it for a while then drive it it doesnt really do it...i was driving it for 3 days before it did it on the weekend. Other the a pod...the car is stock...i am going to put a aftermarket BOV on it sometime as well.......I will change my afm tomorrow if i get time and see how it runs with that....and i will pull apart the old one and have a look at the connections....any other ideas from anyone would be good.