i can't help it phil, you set yourself up for it it's all lighthearted humour

if you were new on the board, or new to cossies, i would have a different attitude and be more helpful without the sarcasm and piss taking, but you've always blown your own trumpet about how good you are at diy tuning so i see you as a target.

you just worry me slightly that you do a lot of fiddling about with things like fuel quality retard jumpers that do affect the spark timing, yet you don't seem to know the basics of how your engine management system works. i would also recomend to you that you read dave walkers book on efi to get a good grasp of the basics, as by your own admission you are not technically profficient.