My 2000 busa was stolen and got 75% of it back but the theft was trying to mod it when caught. The issue I’m having is after taking off his mods, I wanted to update the harness and fi system to the 2001 in tank fuel pump, but can’t get it to do more than backfire, and I can’t find much info on what I’m missing? Think it might be a timing adjustment but just don’t know. Hoping I don’t have to go back to stock harness and fi system. What am I missing or am I stuck with oem harness, tank/fi system?