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Buell Forum » Knowledge Vault (tech, parts, apparel, & accessories topics) » Engine » Intake: Intake Tract, Airbox, Filter, Manifold, Gaskets » 1125r airbod mod? « Previous Next »

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Victorspecial
Posted on Wednesday, March 27, 2013 - 08:05 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Has anyone tried something or just put in a K&N and leave it at that?
Saw on the net some guy removed the inner cover and ran it that way. No dyno results though. Thanks
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Froggy
Posted on Wednesday, March 27, 2013 - 08:27 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Honestly I would leave it all stock, the airbox is windtunnel designed to provide a ram air effect over 80mph, increasing power. Removing the lid of the airbox will make it sound awesome under hard acceleration, but won't do anything to your performance at street legal speeds.

If you are interested, you can try changing the velocity stacks, Twin Motorcycles makes some nice ones that claim to make more power.

http://www.twinmotorcycles.nl/webshop/artikel.asp? guid=YXHFSC&aid=3005&cid=5365&s=&a=&aname=Buell_11 25R_and_1125_CR_Intake_stacks


They are also sold by 5-0Dro if you don't want to order internationally.
http://50dro.com/index.php/buell/1125-models/2008- 20102013-01-19-02-24-09/twin-motorcycles-buell-112 5-intake-stacks-detail
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Victorspecial
Posted on Wednesday, March 27, 2013 - 08:32 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Thanks Froggy. I haven't seen any discussion about it. The 1125 electronics are likely too fussy as well.

I know OEMs spend alot of time engineering the intakes but sometimes it is just to quiet it down and not necessarily for performance.

Those stacks are pretty. To bad they aren't visible like on my old Ducatis.
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Froggy
Posted on Wednesday, March 27, 2013 - 08:50 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

The 1125 eletronics are great in this regard, they have a pressure sensor in the airbox to properly adjust the fueling for when the ram air kicks in, so if you are running some kind of custom setup it will still compensate for the correct pressure. You may need a remap for a different flow rate though.

The airbox was designed for performance, not really noise. The throttlebody has a second set of butterflies that are actuated by a solenoid, they use this to meed noise regulations. Under some conditions if you go full throttle at low RPMs it will shut those butterflies killing the power. Luckily it takes only a few minutes to bypass and does no harm to the bike:
http://www.badweatherbikers.com/buell/messages/290 431/490767.html
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