Possible fueling issue - stumble on first-gear accel

[xt12nut]

Take it to your dealer and tell them about it. The air bypass screws are needing to be backed out to improve the throttle response.

OBE

 

[Tremor38]

Yes, there is a rough patch around 3500rpm. More noticeable when accelerating on an upward incline. I seem to recall that Blueyes touched on this by referring to a "resonance" at 3500rpm that he reported had been eliminated with PC5.

I think he said the resonance pretty much went away after he added the Akrapovic slip-on. That was before he added the PCV and Arrow headers Funny how that resonance with OEM muffler bothers some people while others barely feel it. I just heard from another member who had the Akra, but switched back to OEM because the Akra shifted the resonance to a higher frequency vibe that he couldn't put up with. I guess we're all made-up just a bit diffeent. Funny, this sensitivity thing is. 8)

 

[X5]

I think he said the resonance pretty much went away after he added the Akrapovic slip-on. That was before he added the PCV and Arrow headers Funny how that resonance with OEM muffler bothers some people while others barely feel it. I just heard from another member who had the Akra, but switched back to OEM because the Akra shifted the resonance to a higher frequency vibe that he couldn't put up with. I guess we're all made-up just a bit diffeent. Funny, this sensitivity thing is. 8)

Let that member know I am interested in his akrapovic can.