i have an 9 road king, 96ci EFI. and it is running like crap. I recently added taller bars and believe when we extended the wiring, i may have messed something up because my cruise control isnt working now and it is showing me two codes now. one is P1510 and the other is P2138. it is also hard to start, and i just had the compensator replaced. Any ideas on what to do would be greatly appreciated.

 

Those two codes are for twist grip sensor and limited performance mode. I'd say you definitely messed something up when you changed the bars. That's where I'd start.
https://www.fuelmotousa.com/p-29661-...ble-codes.html