Demon,
The MAF DOES NOT HANDLE INJECTOR SIZE all the MAF does is send a signal to the PCM indicating how much air is flowing through it. "Re-calibrating" a MAF for different injectors, and MAF "optimizers" alter the signal from the MAF to the PCM, to trick the PCM into thinking a DIFFERENT amount of air is flowing through it. This is used to compensate for injectors that are the wrong size. Regardless, this method is a half-arsed way of tuning, the injector size should be changed at the PCM either via a re-flash, or a custom "chip"
furthermore, wtf is "fuel enrichment" ???? The A/F ratio is either correct or it isn't. The term "fuel enrichment" historically implies a dump of an indiscriminant amount of fuel; this is dumb.
