[olddog]

I didn't intend to blast the MAF on the engine. I just worry if you did blast it (off of the car) that you wouldn't get every last piece cleaned off. Anyway blasting at even low pressures looks like a bad idea all the way around. We use it to clean metal parts that have had plastic burned off of them. So there is cabon on the parts that is very thick. Glass bead blasting brings them to a polished shine. We have been blasting the same parts over and over for 30+ years with no apparent wear.

I was under the impression that the EEC would have to have a chip added to tune it. You make it sound as though I could tune it as it is with the Tweecer. Is this correct?

Can you actually get an accurate reading of a 12.5:1 AFR with a wide band O2? Some charts I saw looks like the O2 gasses drop to near zero just bellow 14:1. It looks like it is impossible to acurately measure the differance between zilch point zero, zero, and almost zero. If what I saw is true, it looks like wide band alone is not going to give you good information, when the AFR is this rich.