Got an xt660z today and just been informed by the previous owner it has, I presume, the kev mod on it. It has a little black box with a red light on it, by the headstock.

So, how do I know what gen the mod is ( as I believe there are a few)

It doesn't have one of those controller type things that folk set to 5pm (or is that the o2 thing?)

Just had a quick look at the air filter and it's open under the seat and it feels just like a foam one, how do I know if it's a DNA one ??

Sure there will be a lot more questions to come.