I would think the Suzuki cable would give a better reading than using a powrler supply as you are using the bike power to supply the tps. Not sure if the readings are spot on compared to the KTM tool as I do not have one but like the way mine runs at .640.
I have the euro map and fmf full system de-smogged. I really like how mine runs with this setup and 14-50 gears but am curious what the JD tuner adds?
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"There is no traffic Jam on the Extra Mile" Zig Ziglar