while you may have never "hot rodded" or whatever, did you check the oil recently? what about the previous owner? unfortunately, your description fits that of the std. oil-starved M rod knock....
take a few hours and READ the manual. don't just skim it, READ it....the only way you are going to wrap your head around the function of the MAFT pro (or any device...) is to take the time to understand how it works....there is a mountain of information available to you, time to access it...
not the best idea to run other people's settings- EVERY car is different. take the time to LEARN how to use whatever tuning device you have (MAFT pro, SAFC, etc.)....if that's too difficult, take it to a shop that has the know how to do so. using someone else's settings can only lead to bad...
that's a bit concerning as Vc is the 5V reference for the TPS + AFM. i'll have to talk to bob about what that may/may not have done to the MAFT pro....or the ECU.
while E2 should work, i would use E1. E2 = sensor ground, E1 = computer ground (i.e. ECU ground...).
so is that w/the MAF...
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