New Holley spreadbore FI

My buddy ran Holley's FI on a blower motor and it would not work
and here is why, he had a 4 speed lenco and when he would cruise down the road and grab the next gear he never gave it more gas and with the extra load on the motor it would lean out and pop back and throw the belt every time. Holley sent him many calibrations and none would work. He went back to 2 4 bbl's and it never happened again.