Does it really matter how I turn off the bike?

Im not sure if it matters or not...but Computers are involved so there might be something to it. If your home PC is running windows and you kill power instead of a proper shut down...eventually you will corrupt the operating system.

Best to follow procedures any time a computer of some sort is involved.
 
Both shut the bike down. However using the kill switch still has systems powered up and on '08 TBW bikes that can cause problems. If you bump, twist or a fly farts on your throttle you can have your idle start to creep up over time. This can cause zero throttle position setting problems with power commanders. All your fuel settings can then get a little off from the throttle setting since 0 wasn't really zero.

Harley had computer flash "fixes" for this problem but then you gain throttle hesitation. If you have an '08 TBW bike let the idle settle down and shut off with the main switch. Every month or so do the reset procedure but turning off and on to make sure everything is reset.

Pain in the butt .... what do expect for a $25,000 bike??? I actually dumped the Powercommander and went with the Tmax for no more problems. The PC isn't the problem but it piggybacks on the crappy computer from Harley. Tmax all alone. Fuel Moto knows of the problem and tried to help me the best they could without fully giving up due to the junk Harley computer for TBW.

Good luck
 
By using the kill switch is just turns the bike off gracefully allowing the bikes computer to reset to the default startup settings. That's all. If you don't have a computer do what you have to do to stop the engine...das it!
 
With all the "experts" here, you think we could at least learn something here. I especially like the theories that the kill switch has any effect on the ECM or that powering off the ignition switch could corrupt the data. Funny shit, keep it coming.
 
I just turn the switch on the tank to off and hold the alarm fob till the signal lights flash. Lock the forks when I leave it on the street. Works great for me since it always seem to be there when I come back. Do not know if you have the alarm but if you do you ought to practice the disable with out the fob once and a while.
 
Thats call the bank angle switch. I under stand its only good for a few uses. Maybe 9 or is that cats? The previous owner of mine used it twice.
 
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