were trying to put an s4 motor with an s5 tb, with an s5 harness and n351 ecu. well its all in and everything but its not running right, it cuts out under any heavy throttle. itll get to 6000 and wont rev any higher, itll cut out anytime you hit the gasd no matter what rpm its at. it idles fine just has problems accelerating. is there something were missing here??

:edit: when its given full throttle from idle or anywhere itll rev then cut out, and backfire through the intake. well try to get a vid of it later, were going over the harness right not to check, again, to see if anything is unplugged. when we pull the motor from the s4 car it ran perfect. were stumped.

 

keep any eye on the throttle linkage, its doin all the wierd **** on its own at wot.