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Buell Motorcycle Forum » XBoard » Buell XBoard Archives » Archive through June 10, 2009 » Flat spot in throttle response from a stop? « Previous Next »

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Swordsman
Posted on Tuesday, June 09, 2009 - 09:10 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

Since I've chopped open the airbox, I've noticed a significant flat spot in the throttle when I'm taking off from a stop. Just as I crack it open and let the clutch out, the engine bogs and bounces a little... it feels a lot like taking off on a Blast. I guess I'm going to have to datalog to see what's up, but it feels like it's too rich. I plugged in the stock maps (was running a modified EEPROM with some Xopti tricks), but the lugging is still present. With the airbox opened up, shouldn't it be just the opposite problem, if anything?

~SM
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Hotrod427
Posted on Tuesday, June 09, 2009 - 09:19 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

Bump- I'm having a very similar problem, and am interested to see the answer...
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Glitch
Posted on Tuesday, June 09, 2009 - 09:31 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

The initial twist of the wrist is letting way more air than the engine can handle, causing the flat spot.
You should be able to tune it out.
Data logging is your friend.
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