Thanks for the reply's - both.
@ In-Tech I'm running the BAMM now, It's on a Moates adapter with a custom prom for the trans from Sinister performance.
Honestly I had no idea what I was putting in there when I got it, but it works as well as the AWUM the rig came with, which is also the chip I had in the original ECU when these hicups started.
I didn't know there were pin problems with the memcal's, all I can say is I'm getting the same driveability weirdness with either one.
@MO LS - thanks for the support, I'm trying to get somebody to rocket-freight a DRAC (CBU 16124435 if anyone's interested) to me by Friday. (I need to be gone by Monday next week).
Reason being, I did the jumper re-calibration for tire size on the DRAC I have, and noticed it now "bumps" the speedometer needle at low speed, maybe related - one of the last times I drove it with with the old 7060 PCM the speedo needle flipped over all the way to the right.
My current working theory is that the trans going to neutral at 50~60 mph, the pulsing speedo needle at low speed, and the speedo flipping are all related, and all point to a bad DRAC. Also if the DRAC is passing 12v to an ECU pin that looks for a 5v square wave signal it could be the source of the electrical aneurysm this thing is having now.
I wish I could get an actual circuit board schematic for the DRAC, I'm thinking it may just have a bad diode and it's putting 12 volts to the ECU on the VSS input to the PCM.
I have diodes and a soldering iron.
I could fix that here and be done with this drama!
(sorry if my grammar and context are scrambled this morning, it's early and I'm pretty cranky over this...)
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