Has anyone used one of these?I just put on one and with 7 disc stock jetting and a K&N filter it the plug was a real light tan.I went to 6 disc and it got dark on me.So can anyone give me some advise till tommorrow?

 

The 6 disc jetting is just a little bit rich and the 7 disc is just slightly lean. The jetting with 7 disc should give good power, while with the 6 disc it should give better engine longevity.

 

Thanks I always jet my bikes a bit on the rich side anyway.I hope this system does as good as my Aaen has on my 2 stroke.