Hi Rob,
Very bad luck with what happened today, I was looking forward to giving it back to you so you can feel the force f your new setup, I feel for you after spending the money on the single conversion.
In my opinion the engine was on its way before we starting mapping today. A tell tale sign being the small oil leak which has now become a large oil leak from the camshaft seals trying to pop themselves out of position, the timing belt has oil on it now, so there's a bit of heavy breathing going on. Must have been the beginning of the piston problem. Never seen cam seals pop out on a Supra before, plenty of crank seals but not cam seals.
Beforehand there was a bit of blue smoke on start up, soon cleared though. Also the car was given to us with the afr's all over the place, running off the scale lean one minute then the other way then back again, completely inconsistent, I dont know how long the car was driven for like this and under what conditions. The new 02 sensor we fitted got rid of that problem.
The engine started smoking after only a few pulls, running WELL safe AFR's and ignition figures/no det, 1.3 bar boost and no signs of anything going wrong, switched it off immediately and got a tow back to base. Took the plugs out and done a quick compression test and no 5 was found to be very low. So now its either engine rebuild or a replacement engine.
If you need to talk to me about any of this just give me a ring on my mobile 07774 835062, I'm away on holiday until the 5th September.
Ta