I got an ebl flash ecm for my 93 chevy, but i didnt realize i had to splice my harness and piggyback my old ecm since i have the 4l60e. its plug and play for pre-93 tbi trucks. I also have the serial to usb adapter, and all the necessary software and base tunes for it. id like 400 obo, located in watseka, il. can ship.