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Tleighbell
Posted on Tuesday, May 24, 2022 - 09:11 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

2006 Uly runs perfect up to about half throttle. Won't pull great on WOT and totally bogs on WOT when the exhaust valve opens. Idles perfect at 1000 RPM, does not hang up. AFV 105.3 after running in learn mode about 20 miles. No error codes.

Back story is had to remove and replace rear head to fix broken exhaust stud. Was running perfect before that with a 2004 BUEGB stock ECM. On reassembly the problem starts as above, in fact it was worse because it would completely bog on WOT with exhaust valve open or closed. Muffler is a stock XB12 from an XB12R. K & N filter and a couple extra holes in the airbox.

More back story is after running the 2004 ECM I installed a 2006-2007 ECM which i bought for the purpose of downloading a map from Twin Motors for their Torque Hammer muffler. The bike ran a bit better with that ECM (as described in first paragraph above). I think the Torque Hammer map is on that ECM but not 100% sure. I am thinking of trying to re-install stock map and if that doesn't work, then send ECM to IDS for re-flash of stock map.

Could this be something other than mapping issue? Any other solutions?
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Griffmeister
Posted on Tuesday, May 24, 2022 - 09:24 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

This may sound really strange, but I had a similar issue after rotating my engine once. Still canít fully explain it but apparently I didnít have the rubber air horn under the air box cover properly installed. Be sure it is properly seated on the intake and that the spring clamp does not interfere with any cables or wiring. Lastly, just be sure it is secure in the air box with no pinched or displaced areas. A minimum of effort and no cost so it might be worth a try.
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Tleighbell
Posted on Tuesday, May 24, 2022 - 05:25 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Thanks Griffmeister. I was pretty careful putting the intake horn in place but might be worth a look.
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