P061B with 91 performance tune

[Virge]

I have a big problem with my predator. i have a 2005 ford mustang v6 automatic. When i try to intall the standard 91 octane performance the wrench light come on with the P061B error. With the original tune i don't have this problem. I have stock air box, and BBK throttle body 70mm..

My predator is update (9.09 revision
)

What is the problem??

[mikel]

please post the last tune written to the vehicle.

[Virge]

I try to reinstall the 91 octane performance tune, and now i haven't any error! Why does P061B come on?