93 & earlier comp in 95?
 

Ive heard that by putting a computer from a 93 or earlier mustang in a 95 i could gain around 10hp. Is this true? If so which computer should i be looking for? Thanks

The tunes are more aggressive in the A9L computers, but I think you'd benefit more from a tuner device like a TwEECer, or a custom burnt chip. Your electric fan is controlled by the EEC so you'd have to rig something up to control it if you went backwards.

Good point. I never thought about the fan. Thanks for the reply. Maybe when i get more money ill look into the tweecer. Thanks again

I tried putting the 90ECM in the 95 and it ran so rich it fowled out a plug right away, and idle was increased significantly too, maybe needed some tuning and an adjustable FPR and it would work, but I changed the plug and assumed not mess with it. I was just testing anyway.