I have a gsr swap in a ex coupe 92-95 body

Car was throwing numerous codes i fixed everything...

I just installed a vafc 2 and after the car hits vtec it throws code 23 (knocksensor)
Car loses alot of power when this is on.

The knock is connected and when i shut the car off and turn t on no code til it hits vtec.

Could the knock be bad?

Also on the vafc the thr% goes up to 100 then drops to zero % at 4,800 rpm them climbs again, car feels sluggish when it drops...