TPS reads high with throttle closed

[myburb]

If you have adjusted there should be no problem. Years ago I fooled with $31 and BMHM and although it worked pretty good I went back to $OE as it was a little smoother. What mask and bin were in the vehicle your trans came from. In regard to your tps problem. Are you still using the iac from the 88? If so the iac logic from the early iac and the late iac are different so is it possible your iac is closed and you have opened your throttle blades to compensate and that is where your high tps reading is coming from?