Vex is right on that one - again, don't ask how I know it either....

Also, did you make sure to reinstall the fuel injector baskets? Have you confirmed timing at idle?

Theres no way my primary plugs would reach to secondary injectors. And the car was super flooded when I finally got it started. It has premix in the tank cause the original s4 setup was premix only. No mop. so I pulled egi fuse and cranked engine. It spuddered till it cleared out, then was idling so sweet. But couldn't rev fast. And with the s4 motor setup, we swapped some plugs to run s5 ecu and harness. It ran the exact way it does now with all s5 components. So I know its not the initial swap of everything. Something is not working or not recieving the right signal. When we had the afm off and shake it, u can hear something loose in there but its stuck inside somewhere. I need to Jus start checking all sensors for the right ohm reading??? Anything else I can do? Appreciate the help guys.

Seriously, it sounds like a TPS issue if you are sure that the injectors are wired correctly. The ECU doesn't know that the throttle just opened suddenly and can't compensate.

The S5 ECU & harness combo needs to see a functional S5 electronic OMP on it, otherwise it will fire off the check engine light and dump it into limp home mode. Do you have an S5 OMP hooked up? In limp mode it will idle fine, and can VERY SLOWLY accelerate to maybe ~3K RPM, but it will run like a dog.

Ya,it has s5 omp that is plugged in. If its working or not, Idk. I work all day so I haven't messed with it. But it will rev all the way to redline very slowly. But nothing rapid.