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First bike ever, '18 MT09 pre-owned, bike had some aftermarket parts already installed.

Apart from just accessories already added, the main performance part that got done was a full Yoshi R77 Carbon exhaust.

Is there any way to see if my bike was previously flashed?

Some time ago, I've seen talk about after installing an aftermarket exhaust, the check engine light will come on and the only way to take away the light is a flash.

Is that the only way or are there more signs to see if bike was previously flashed by previous owner.
 

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No obvious way to tell, but if you look at the ECU many tuners will leave a mark or sticker on it
 

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What mode appears on the dash when you turn on the ignition?
If A comes up it's been flashed. If STD shows you will need to heat it up like vcyclenut describes.
 

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Not true. My '18 hasn't been flashed and it comes up in "A" mode every time.
I was totally unaware of this so to make amends all you guys should come to my place tonight for drinks-------I'm buying!!!
 
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