392 Stroker fueling Issues

[Moper]

Built a 392 stroker and have been working with a tuner. It's running really rich and surging from 1400 to 2200 rpms and will not idle lower. Checked for vacuum leaks and exhaust leaks but didn't find anything. Tried a different throttle body but nothing changed. Throttle response is laggy. Truck is a manual but we are using an automatic ECM. This is the latest tune my tuner sent me but are running out of things to try. I will also list the specs and upgrades to the engine.

2018 5.7 hemi
392 stroker kit
392 injectors
87mm Ported throttle body
Long tube headers
Manual trans
Sensors, computer and tone wheel switched to 2005 Ram 1500 equipment
Pretty hot cam with .600 lift

Any help would be appreciated.

[Moper]

Got it all figured out. Thanks for all your help.

[Chubby Racer]

What did it end up being? To help people with similar issues in the future.

[Moper]

We had to switch two throttle pedal wires at the ecm that were sending wacky voltages to the throttle body