I have a custom made piggyback chip from Ed Wright (Fastchip) This installs in between your computer and the stock chip. It was custom programmed for my engine but maybe someone here has something close or can reprogram it. My specs on my engine are 383 HSR with 224.230 cam and 30lbs injectors. It clearly has this printed right on this chip. There is also a bin file that Ed Wright has on file for anyone to who buys this off me. It is in perfect condition. I ended up going with the FAST EFI system and no longer need. I also have a spare chip with the letters AXYC 1616 3138. I will throw that in for nothing. I am asking $150. I paid $350 for it new.

MAF or SD ?

SD, sorry for not mentioning it.

how well did it run, because ive got a 383 coming, and this would make me keep tpi,

like i wanna know, was it runnign rich at all, 1/4 times? what exact cam, anythign special with the heads?

I only ran it for a short perod of time and I had some other issues with the car and it wasnt running right. I ended up ditching starting over from scratch with the wiring and bought a new FAST EFI setup and just used that. I sold off the stock TPI ECM and still had thi9s lying around. I wish I could give you more info on it but I can't. as for the cam, I am running a 224/230 .502/.510
The heads are AFR 190 street heads. That was the info given to Fastchip for the programming. The injectors are 30lbs.

"and this would make me keep tpi, "

This was tuned as stated for a HSR.
Big difference in tune especially on SD car.

You will be able to retain the factory computer setup. I am unsure of how much this chip is actually setup for the actual type of EFI setup you would run but if anyone is interested in it, I am sure thst Ed Wright would be more then happy to give a possibe buyer more info on this piggyback chip. Im sure it can be "retuned" also.