Has anyone tried or have experience with using Fatduc's with the Termi slipons for the Streetfighter. The slipons came w/ a new ECU but I am told that it still uses the O2 sensors (closed loop). I purchased the Termi slipon kit with the hopes of a smooth run'n bike.... Still has the flat spot with sudden power. Great look'n bike, but for the money, I was hope'n not to have to deal with a major issue like power delivery...