As far as I know it is not programmable, which is why it would only work with an engine in the 375-400 horse range as was intended. As alluded to by Rumblefish you could play with the injector sizes if you had a combination (cubic inches, cam, porting etc.) that could flow more air.
But if you're really deviating from the intended application you're probably better off with one of the myriad other systems out there.
