Has anyone done this? I have searched and seen that if you take the secondary butterflies out your lose traction control. Is this true? Also will the bikes A/F ratio be way off if i take the secondaries out with the reflash?
I don't know about the Gen 4 as much, but on my Gen 3 Don told me to leave the flies in as they help increase the velocity of the air in the lower/mid rpm ranges. I had mine out for a bit and on the street I wasn't happy with it, then I put them in again from Don's recommendation and got a flash from him and its definitely better in the low/mid than before.