Is your MAF stock? Are your injectors 24#?

You can tune the car by adjusting the MAF curve so that it gives you good WOT A/F and power, but in so doing you may be screwing up the non WOT driveability.

Because of this you need to use the stock MAF and leave the stock MAF transfer function, then adjust the commanded air fuel from the fuel base table to pull or add fuel as necessary.

If it is not a stock MAF then the challenge will be in accurately figuring out the MAF function.

Former owner of '99 CSVT - Silver #222/2760 356/334 wHP/TQ at 10psi on pump gas! See My Mods '05 Volvo S40 Turbo 5 AWD with 6spd, Passion Red '06 Mazda5 Touring, 5spd,MTX, Black