A fueling problem was my first suspect. So I changed the fuel "route" so that the high pressure return goes straight back to the tank without the possibilty of it recirculating through the hp pump and getting overheated. It may still be worth trying a tank of the more expensive stuff though. I'll try tyat next time I fuel up.
I just came back from a run without the alternator working. Still has the missfire - so that eliminates that.
One other thing that is odd though is that the characteristic of the missfire has changed since I changed the ECU. Something else to think on....
Cheers, Robin
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