Using the right numbers does matter,
if you want things to be correct.

If OK, works for you, fine, feel free to hit back, and ignore this,
BUT, if you're going to go to all the effort of buying the equipment, spend the time learning what to do, then why not spend the time to do it all correctly?. It really doesn't take that much extra work.

And for those that say MAF is just soo much easier to work with, well, then you just haven't tried using the 58 code. While the table sizes in the stock code are rather small, it gives about the same number of calibration points as what you'd have to use in a MAF car if you were spending the time to dial things in, without resorting to the injector fudge factor.

And there's no comparision in how much better the 58 handles the AE stuff.

If in doubt get a WB, and really spend some time, and you'll see what I'm talking about with the inj/constant, BPC stuff.