Fuel Cut?

[A//// Guy]

Fuel cut feel like you hit a brick wall for about 1 second. If the jerking doesnt make you eat the steering wheel then its not fuel cut.

How are you monitoring knock? If its knocking add fuel, adding fuel causes fuel cut but I never had a problem at 15 psi with my old 20G and MAFT/afc1. Find the instructions for the MAFT and then go over all the dip switched inside the box and see what they are set too. I would make sure they are only adsjusted for 650s and then 0 out all the other knobs and just use your AFC to tune.