hey guys

i just installed a power fc in my turbo 2 (s4) with a custom harness and the banzai racing coil trailing coil mod. the issue i have is that rear trailing coil is not firing. i check all the wires and they have good connections, all in the right place. they coil and igniter have power going to it, tried different coils and igniters and idk at this moment what else it could be. i didn't buy the pfc from banzai. bought it second hand from a good well known friend of mine and i saw the car running before he sold the ecu to me. is there a setting or something that miss on it?

thanks
eddie