LEAN WITH AIRBOX MOD

[hognit09]

This is what my plugs look like before airbox mod. This is with running only a EVO muffler and the latest Yamaha flash. I did the airbox mod and bought a EVO stage 2.5, and I believe we all would be too lean without a EVO reflash or powercommander. What do you all think ?

 

[cannondale27]

I agree. On mine right at about 1/4 throttle cruising is where mine was real lean after flash.