TFI...
I would swap TFI's and the entire distributor. Also the coil.
I know your tfi is not co-located with your distributor but it's worth a shot.
I had a similar problem once that I troubleshot forever. It was the PIP sensor inside of the distributor.
I feel your pain.
Good luck.
__________________
1988 GT Convertible
331 10:1 TW heads, GT-40 intake, MSD, TRW flattops, B Cam w/ 1.7's, MAC exhaust, 24's, 70 TB, 76 MAF, 3.73's, Pro 5.0, Koni's, Anderson PMS, Wideband 02, yatta, yatta...
One week with new motor, two speeding tickets...joy
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