What sensors does the compuer use at WOT.

[5ohCOUPE]

I have a 1991 5.0. I was just wondering what the computer reads at wide open throttle. I have heard that it doesnt read the mass air, or the O2 sensors and that it runs off of a preprogrammed fuel map. I think that this is wrong. Any ideas?? Im trying to figure out a problem with my car and this info might help me. THANKS

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91 LX COUPE, 3.73 gears, 2 1/2 inch full exhaust, 1 5/8 shorty headers, 73 MM C&L MAF, 70 MM MAC TB, LUNATI cam, Windsor jr heads, GT 40 intake with ported lower, world class T5 with PRO 5.0 shifter, Griffin aluminum radiator, Fluid Damper, SSM traction bars, 150 HP shot N2O kit, 190 GPH in tank fuel pump with T-Rex external pump. And more to come.
BEST TIME ON BOTTLE---11.51 @123
BEST TIME ON MOTOR---12.63 @109