Is this belt slip?

I know this is getto but its the only way i knew how to post this log. The green line is TP and red is MAF. So is the weird lag of the MAF just a function of the blower or is it a sign of belt slip. Its a 94 ported Eaton 13% overdriven.

Not belt slip. Looks to me like you spun the tires.

I didn't even think about that. With it being so cold and 430ft pounds of torque it probably did spin them.