"--IN ADDITION, I remember that the #1 cylinder about 9 months ago... I had replaced the spark plugs but damaged 1 while handling it. I put 5 in, drove the car a few days and then replaced #1. The car was misfiring during this process... I didn't think it was that big of a deal but apparently, I learned later from John Zahn, that the misfire was pinging and unburnt fuel was washing down teh cylinder wall."
Can the misfiring in a few days cause this much problems on #1 cylinder? I would think that the fuel would be pushed out from the exhaust valves. It would probably overheat the cats due to the unburned fuel.
Furthermore, the oil would get on the cylinder wall each stroke to lubricate it.
The vehicle must have cats if they are to overheat.
At 90psi fuel pressure under boost there will ba alot of fuel added to the cyls, Fuel washing of the Cyls has always been a concern with engines that were not designed to be supercharged and Fuel management is primarily used to prevent misfire and keep the combustion chambers cool.