Just finished this... cleaned my R32 RB20DET, 95K on the clock real easy to get to 4 bolts at the back of the plenum lol my was full of carbon lol cleaned it all out got lucky too took the screw out cleaned it all up and put it back roughy were it was sitting b4 and now NO more stalling at lights and the idle sits dead on 750 now instead of jumping around 500 to 850 and only took about half an hour lol would also advise to cleaning the plenum were the aac valve bolts onto that was full of carbon too just used the cotten buds with carby cleaner on that but yeah great write up