Hello all,   So following on from my previous thread my 1.6 GTi is now starting fine. However with the air flow meter plugged in, the car will not rev above 2,000 rpm and misfires when idling and revving. If you boot the throttle it will just die. If you blip the throttle quickly a few times you might get the revs to build up to about 4,000 rpm.   However with the afm unplugged the car revs perfectly and the misfire seems to be gone although it runs very rich with the afm unplugged. So is this a simple case of a bad afm and just fit a replacement? Or could something else in the fuel injection system be causing this behaviour? I did notice when the afm was plugged in, the car was idling quite fast (1,500 rpm) and never settled down even when warm as though the SAD was not working properly?   Cheers for any suggestions.