Hi everyone! New to the forums! I have a couple questions. I own a 1969 Ford Mustang. My friend is selling me a motor of out a 1998 Ford f250 350Ci Windsor V8 with a 5 speed transmission for the mustang. Its stock with EFI (obviously) but I have quite a few upgrades planned. Aluminum heads, Bigger Cam, exhaust ETC. So I figured an aftermarket Standalone ECU would be a good idea. What are the benefits of adding the aftermarket ecu and do they make one that is plug-n-play for this kind of engine? Or would I need to wire it all in myself? Thanks for the help!



-Sam

Standalone is the way forward. Do you have a base map ready to get the car started on?

If you are looking for standalone ECU for classic american V8, check the Australian ECU manufacturers. Motec and Haltech are the best brands on the market.

I'm not sure if the ECU for that engine is an old 60-pin EEC-IV or a newer 104-pin EEC-V, but you have multiple options in either case.

1.) Go with a standalone. The benefits are (usually) better user software, access to just about every tuning parameter, flexibility, and often a lot of extra features.

2.) Tune the EEC. There are several J3 chip options with a Moates Quarterhorse probably being the best one out there now. Unlike most standalones, there would be no rewiring necessary.