Zap *STILL* wears Depends
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When you go part throttle, the butterfly is only partly open but the turbo is trying to make boost and push air into the engine. It is a bit confusing for the computer....ma kes it hard to get the fueling right. The TT chip is very good...I was mainly referring to those that push the pedal halfway to the floor, make 17# of boost and want someone to analyze their run. In your case, start the run in third gear as I suggested above, ease the pedal to the floor rather than abruptly stomping it....and watch the timing retard.Does not sound like real detonation to me IF and that is a big IF, the fuel pressure holds at 60 psi and the timing retard diminishes rather than increases..... but, You should be seeing at least 780 on the O2s...I would think you would if the fuel pressure is holdingOtherwise, try dropping the timing to 18 degs from whatever the default is in 3/4
I was bored so I skimmed your thread Phil.You need to figure out your knock - pull 4-6* of timing and see if it goes away. If not - then figure out where the false knock is.To make these cars work you really need to go over them with a fine tooth comb, over and over again. Are we sure the 02 sensor in it is good? ECM/Engine grounds good? I hate chasing 02 numbers - to many variables.