My friend has a 1990 GMC 5.7 TBI and I have been trying to find the right bin and definition files to run with tunerpro so I can log his truck. He has a Jet chip in it, and he no longer has his stock chip. Does anyone know where or how I can figure out what bin files I need? I have been searching for a couple weeks and am having no luck. I am supposed to log it later tonight.

My 94 K1500 was pretty easy to find compared to this 90 one..... any help is greatly appreciated -

Thanks.

Should be a 1227747 ECM with $42...

http://www.gearhead-efi.com/Fuel-Inj...Information-42

another is craig moates under downloads.

Thanks a ton! I knew my ECU was different from his, I couldnt find any letters or numbers on his since it was a JET chip. Thanks again.

What would he need to custom burn chips and such - the inside of his ECU is different from mine so I do not know what adapters he may need. I already have the burner. Just no idea what adapter or chips he needs.

Look at Moates for the G2 and 27SF512 chip and make sure it is correct. Should be for that truck.