Quote Originally Posted by E36slide View Post
Ever hear of a timing light? Lol I mean he did adjust the timing, but not as great as you would with a standalone of course. I know what a piggy back can and cant do.

I have a black top. I think the pfc for the black top was a little different, am I correct?

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Should have been more specific and said ignition timing, which is just as, if not more, important as the fuel map. And from what I have seen, as long as the blacktop isn't a type x, from 96-98, then they are interchangeable. But it might require repinning or switching a couple wires.