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Do you guys have a tune for a 1991? Just built a 331 race engine with about 10.5.0 comp, will be driving it on the street, and taking it to the track.

Looking for some one to help with some tunning questions. I have a 1990 mustang with a 331, car hade a A9L ECU with a chip in it. The computer quit yesterday, took another ECU out of my 95 put it in and the car started but runs very bad with the chip in it, what is the best factor ECU in a race...