Originally Posted by
dfe1
For what it's worth, I think screwing with MAF calibrations is the wrong way to go-- unless the MAF has been altered. As far as I can see, somebody at GM or one of their suppliers spent a good deal of time working out the original MAF settings. That being the case, I would assume that they are considerably more accurate than any numbers I could come up with, unless I did a calibration check on a flow bench. That being the case, if you alter the MAF calibration table, all you're doing is using erroneous data to alter fuel flow. I think it makes a lot more sense to do that with the VE table. You're probably going to have to modify it anyhow, so why introduce another set of variables by altering the MAF calibration? Even in full MAF mode, the system still uses the VE table, so altering it will affect fuel flow. With some other MAF-based systems, there's either no VE table, or it's only used in the event of a MAF failure. That's not the case with LS1/LS6 and E40 control systems.