I have a 1995 TBI 4.3. I have a obd 1 computer per my tune-up sticker under the hood and have the computer in the engine compartment (thin black box above coolant overflow). I have a 16 pin connector under the dash. What is there for my truck as far as reprograming. I dont believe that a chip can be changed. I want to pull some more power and get my spedo right as well as remove the limiter if poss. Am I SOL? Please help if you know. Thanks.