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I was searching and ran across your talk about modifying your own TPI harness. I am planning to put a 305tpi out of an 1986 IROC into my 1989 s10 prostreet. I someone might be able to help me with a wire schematic for TPI. The information you have on TBI is great. I hope you might have the same kind on information for TPI. Thanks in advance. Jeff
Here are pinouts from the ECM. This is for '89. Disregard my marks.
http://i1362.photobucket.com/albums/...ps31e8be18.jpg
http://i1362.photobucket.com/albums/...ps5b488eb8.jpg
Get your ECM number and then look through this thread:
http://www.gearhead-efi.com/Fuel-Inj...ams-Tuner-Info!
May want to do a ECM swap at same time to get away from the MAF system and go Speed Density, like a 1227730 and $8D ?
IF it will help, I have uploaded many wiring diagrams and a specific pin list for changes from my Elky swap. Go to my website ( see signature) and visit the TPI page.