Hi Nige, As you, I have found so little on this subject but I am talking to a local guy here in NZ who is megasquirt agent and has good reports of work he has done and he like me is seaching for codes and data for the ZF so hopefully he knows or finds some one who knows the answers but I wont hold my breath.He has set up Mega shift on Holdens I think so has some good knowledge. If he gets anything usefull and is willing I shall post it here.
At the danger of steering this thread away from the prime question what are the benefits of mega squirting the 4.6V8 as i have been told only slight gains in power/economy available and as it has coil packs tucked at the back of engine already I dont see how it improves water proofing much which would be the primary need for it in my use or am I missing something obvious.