I'm in a jam with my bike and I could really use some help; I've installed the churchkey bak, did the Ivan's flash, and installed a graffeo exhaust and my bike now runs like complete trash! I'm definitely not trying to bad mouth anyone or the products purchased, however my bike ran so much better before I did any of this. When I sent in my ecu to ivan he told me to remove my power commander because I wouldn't need it, and I did....he also sent me to maps for my PC incase I needed them...I ran the bike without the PC like I was told to and it ran horribly; I then reconnected the PC and still runs horrible. It's as if the bike is starving for fuel...backfiring and bogging down then shutting off. I also have a check engine light So then went to the diagnostic mode and produced the codes 15 and 20; I feel like I'm in way over my head and I really want to use the stuff that I purchased that is spoken so highly of, but I have absolutely no idea what to do at this point....can some seasoned vets please advise me?