Recently, when I'm riding my Fi light will randomly come on and then go away, but if I drive over a bump the light will come on and the bike will backfire and/or won't accelerate... and then all of a sudden take off. Also, when I'm driving up to a light sometimes downshifting to 1st or coming to a slow stop in 1st it will just stall out. I accidentally filled it with 87 octane gas when I took it out of storage but I've used up half of that and since filled it with 93 and fuel injection cleaner. Any idea what the problem could be and/or how to go about fixing it? Any help would be greatly appreciated cuz the weather's turning nice and I don't feel safe riding it as is

 

First off the bike is made to run off 87 not 93.
To be honest try to ride it some more. I know that sounds dumb but if it's been n storage it might just need to get back runnin smooth again. Also u can try jumpkn the diagnostic port to check the stored codes and it will tell u why it came on

 

Is your battery connected properly? I know when I ghetto rigged my battery connection on with some electrical tape (long story), whenever i hit a bump the connection would separate by a hair and cause the FI light to come on, and there would be no throttle response, but when the connection came back together the bike would take off.