Yet another twopenneth coming up..........

Many years ago I rallyed a well tuned mini and this had a tendency to run on. In fact when the ignition was switched off pressing the accelerator pedal kept it going continuously.
I knew the engine was clean and the timing, etc was correct because all the performance was there and it was stripped almost weekly. So......conclusion was that with the high compression, wild cam, big carbs and loads of fuel going in, it was the fuel continuing to be sucked past the throttles on switch off that caused the "problem".
The moral of this tale being don't rush around in a panic changing things that aren't "broke" as (in my opinion)running on is a passing nuisance and the engine can handle it.
Finally.......is there fuel going into the engine that shouldn't, when the ignition is switched off? I have little or no knowledge of ECU's, etc but that is the question I would ask.

simon