Hey guys,
I have a 2009 ER6N with Two Bros and Juice Box.
I got the bike with a custom dyno tuned map and it ran somewhat poorly - zero power at all under 4,000RPM (bike would stumble on throttle below 4,000), bad throttle response, surging power.
I located the manual for the Juice box which said position 2 was for my setup (stock everything except Two Bros slip on) and set it to that position. Everything about the way the engine ran improved. Much smoother throttle response, actually some had low RPM power, no surge.
I know out of the box tunes are not always the greatest and I'd like to ensure the bike isn't running lean or anything like that. Is there a way I can confirm this without taking it to a dyno shop?
Thanks