For those of you that know, and those of you that don't - I've been experiencing some rather odd issues with my car which resulted in some pretty strange runs on Bill's rolling road last week. Power runs of 218/237/216bhp with torque figure that didn't correspond and an odd missfire on idle. People keep telling me it's the MAF so again today, the MAF was changed for the 3rd time and.......no difference!! According to VAG COM and the boost graph from Bill, there's no air leaks but cylinder 4's voltage was right down and when revved, was still really down on the others of which cylinder 2 was higher than all the rest. Coil Pack??? Changed and...............FFS!!! still the bloody same!! Plugs were changed 800 miles ago and that didn't cure the missfire on idle so it's not them. I've checked all the wiring, connections and pipework so WTF is causing it?? I'm now getting severely pissed off with it!!