loosing throttle 6.0 boosted, cos 03150003

[derkscustomcars]

Hello,

I have a 2006 6.0 in a 69 c10, the pcm is flashed to a 2003 now with cos 03150003. and matching pedal and tac module

The truck runs fine, still a little rich but that will be changed.

As soon as i go over about 60% throttle, a maf code gets set, truck goes to an idle and i lose control over the throttle.

Once i delete the code, the throttle works again.

Im not running a MAF or o2 sensors, so open loop.

I have the proper map sensor etc.

Please have a look at the attached tune, i must have missed something.

Thanks in advance69 V3.ctz