Loud backfire when opening throttle
As the title says, I’m having a problem with a loud backfire in the exhaust when opening the throttle from fully closed. It’s only happening between 6-7000 RPM though.
I have a 2017 R1, and I’m running the unrestricted map currently. My mods are k&n air filter and a de-catted standard exhaust, exup removed. I’ve also fitted AIS blanking plates.
I’m running active tune but only with a bench flash kit, so it has to tune itself every ride, which is fine as I’ve made a few edits to the base map to get it somewhere close, but I cannot get rid of this backfire.
Ive had this issue before when I first started flashing the ECU, but it turned out to be that I had the fuel cut enabled still, and it would backfire any time I opened the throttle back up, so I’ve tried richening the mixture this time, between 6-7000, but it’s not helped an awful lot. I have actually just started to advance the ignition timing in this area, which has helped greatly but not solved the issue completely. I’m worried about advancing too much though at this point.
Any advice would be greatly appreciated.