Now this may be all in the mind, but my car felt painfully slow the other day. Im always doing that trick where you disconnect the two pipes from the airbox and roaring around with a nice sound etc. But, the other day my car was idling really weirdly after a toasting session on a fast road. The revs were going between 1000-1250 rpm with no throttle, just idling. I thought - "oh dear, this is strange", and turned it off and did the ECU reset trick and the idling went back to normal. I drove home and all was well. I then re-attached the pipes on the airbox and drove the car and it felt really slow, i mean, especially when into 2nd gear it was sluggish. I recently did another reset ECU trick and it seems to be better, but im not sure. Is there a sensor that has gone capput somewhere (erratic idling) and its gone into safe mode or something (limited operating mode?). Or did the ecu adapt to the removal of the pipes?