This turned out not difficult. various numbers I found for weight differed by quarto or fwd and manual or auto, threw in an extra 220lb for my asss. Used an MAF diameter of 2.5 in, think newer non AEB may be larger. Used the 4 bar fuel spec for my injectors so the ms scales. Estimating a little under 195 power for MAF just under 150. About what I read to expect for my tune.
The MAF entry is ONLY relative to 2.7t b5s4
Leave it alone unless you have non-stock MAF