Sounds very much like an engine failure from the fpr vacuum hose being off on steve's car, that would det all 4 pistons. I smell sour grapes that a turbosystems map was used and modded more suited for the engine to me, although i see Stu if that ignition was used as said at 2bar this is not good but i feel the vacuum hose off would cause damage quicker? So i do feel you need to examine that map if if course you get the same one as used!