Maf sensor reading up to 6500 Hz driving normal.

I start tuning the 6.2 denali with a wideband since i took off the catalytic's on my exhaust. Well i put my file to open loop and strat driving normal, Air fuel was on the high 14's so i made some changes. I did a WOT to see how they where they were way off they where at high 14's made some changes lower it to on the low 13's, but i was drivong normal and the MAF read up to 6900 hz and i had made some changes at 6900 hz at WOT so now when i drive normal it's reading a few HZ where Im at WOT and its throwing off my AIR FUEL at normal driving.

Can some one help me out, What im doing wrong here.

Anyone...

I don't get it. What is it you're asking?

Ok i tune the truck with a wideband MAF open loop.

I've tune the maf for the part throttle truck was runing good air fuel on the 14.7

So since i finish the part throttle i went and tune the WOT part, i finish and hte air fuel was at 12.80 to 13.20.

So i stsrt it drinving normal back home and i notice when i was around 35 45 miles my air fuel drop to 12.80, check my scanner and the truck driving normal is hitting Hz where my WOT, so that mess my airfuel on part throttle.

I think i found the problem.

The table from the file is different from scanner...