Detonation.
A combination of a lot of errors.
The broken cam drive clearly didn't help it. The poor thing was detonating at idle!
Then we got we got it going and it blew the ECU MAP line off. More det.
The supercharger appears to be leaking oil into the rotors so it has a thick oil film in the manifold, and all over the rotors. This reduces octane rating and adds to detonation.
I have no idea how it went at the tuners, as the tune it had in it was for a N/A engine when we understood it to be for a supercharged engine.
Followed by a bad batch of fuel.
If we'd tried we couldn't have given it a harder time.
Oh well maybe the next engine will last 1,00km or 600miles!
But wait. It was awfull fast!!!
Next version will be fully intercooled and run water spray bars and chase more horsepower.