Well after chasing the ECUs and tunes half my bikes ownership. During all that I suspected I had a fuel delivery issue which was sporatic and hard to pinpoint. I concluded this past weekend it was the fuel pump. Spit and sputtering when on the gas hard with 2 bars showing of fuel gauge it would do it not always but enough to piss you off. Fill it up boom problem gone. So I pulled the pump yesterday and the tea bag filter boot is black. Looked a lot worse than my Concurs 14 which had the same issue a year ago. I believe this eventually damages the pumps ability to operate correctly.
So I did the same thing I had to do on the kawasaki ordered a new pump, regulator, orings and filter assembly from Quantum Highflow. They pretty much cannot be beat with their pricing and lifetime warranty offer. Pump assembly is fairly easy to take apart. You cannot just buy the pump from Suzuki, no they make you buy the whole assembly to get the pump. But you can buy every little part in the assembly individually. Stupid way to do business. OEM pump assembly is $375 from bike bandit. No way I went with the Highflow kit for $80 bucks and it works just as good if not better than the oem stuff. The Kawasaki C14 had the same pump in it as the Suzuki pump is. Made by Mitsubishi. Same pump and everything. Base plate was a little different is all. BTW that Kaw C14 is still running fine year later with the Highflow assembly.
I probably will have this all back together this coming weekend. Inside of tank looked like new so crappy gas is the problem and a bike that sits a lot. I typically only buy non ethanol gas but I guess all gas is crap now days.