Originally Posted by Mike Rainbird

What compression are you running?

What speed have you had the fuelling tested to?

Has this been det checked or just AFR checked at these speeds? I ask, because although the AFR could be perfect, an engine can still det, so you HAVE To use det cans as well as AFR checking....

I personally think it is as a result of your high speed escapades with Doug and the possibility that your manifold gives higher flow to one cylinder .

If it is perfectly equal, then my other GUESS would be that it was cylinder pressures due to too high compression?

Sad for you, especially as you had just got transmission sorted .