Hello! I recently had my 2019 Tracer 900 ecu reflashed by 2wheeldynoworks. I received my ecu and reinstalled it into my bike. I reassembled all the fairings and started her up. I immediately noticed that the check engine light was on and it did not go away after riding the bike for a short while. I have a Black Widow full exhaust system and a K&N performance air filter installed. I told them about those modifications when I sent in my ecu. I also noticed an extreme amount of popping/backfiring even after installing the reflashed ecu.
I’m not exactly sure how to troubleshoot this issue without taking the bike apart again. Any advice would be appreciated.