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Buell Forum » XBoard » Buell XBoard Archives » Archive through October 02, 2004 » Xb12r race ECM hole at 4k « Previous Next »

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Tobandeira
Posted on Saturday, September 25, 2004 - 11:32 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

hi
i am new at posting. i just mount a xb12 race map and i felt an hesitation just like an hicup at 4k. is this usual with this ecm??? can it be a malfunction??? if its usual how can i fix it?? other than that it works just fine.... can anybody help me with this one please????
thanks in advance
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Rr_eater
Posted on Sunday, September 26, 2004 - 01:27 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

Did you have the TPS reset when you installed it??

That would be my first plan of action!

Bruce
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Tobandeira
Posted on Sunday, September 26, 2004 - 07:03 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

HI
Bruce
yes i made all the procedures.... in fact the thing is fantastic trough all the rv range.... simply at that specific rpm there it is a small hicup... i moded the OEM exhaust, like the drummer and i kept the motor valve once it is disabled, so i think it maybe aN ecm malfunction. One thing worries me though, i installed the ECM and then i had to travel 50 miles without tps adjustment. that may weakened the spark plugs to produce that symptom??????????

(Message edited by tobandeira on September 26, 2004)

(Message edited by tobandeira on September 26, 2004)
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Zx9rmal
Posted on Sunday, September 26, 2004 - 11:47 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

<< i moded the OEM exhaust, like the drummer and i kept the motor valve once it is disabled, so i think it maybe aN ecm malfunction. One thing worries me though, i installed the ECM and then i had to travel 50 miles without tps adjustment. that may weakened the spark plugs to produce that symptom>>

Ummm, weakened the spark plugs? I would have the dealer reset the TPS, BUT it may be your "drummer" mod. How can you do their mod when they do NOT disclose exactly what they do? I'd get the real drummer or the rest of the race kit.
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Tobandeira
Posted on Sunday, September 26, 2004 - 02:32 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

hi

i simply turn the OEM exhaust into a direct exit.... nothing very secret to know or to hide.... and thr hicup at 4k seems to me something to do with fueling.....
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Xbolt12
Posted on Thursday, September 30, 2004 - 12:44 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

Yikes!

Look at Trenchtractors "Race vs stock ECM" post here. You might be running waaaay lean in the middle.

Also look at the treads hear on Techlusion-I've had good luck so far. Waiting to see Trenchtractors dyno results though (especially AF ratio).

xbolt12
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2k4xb12
Posted on Thursday, September 30, 2004 - 12:06 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

Your exhaust might be the problem. You can't simply weld in a chunk of pipe and expect it to work right. I'm running a Drummer now, but I originally bought a "straight through" Jardine which left me with the exact same hole at 3,700 RPM. It sucked! I swapped it for the "real" Drummer and no more hole. The power curve is so much smoother than stock (not just seat of pants, but on the dyno as well). It's more straight and linear than stock.
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Deerhunter17
Posted on Thursday, September 30, 2004 - 10:48 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

Toban, don't know if we are experiencing the same thing, but I too have had a Hicup, almost as though the ignition shut off for a split second. Haven't noticed the specific RPM, but seems to do so more while cold (initial 10 miles or so ). Bike runs well, idle through acceleration, just once in a while a "hicup". I have race ecm, and a drummer ( yes the REAL drummer ), tps was reset. Have no answer for it, I'll be paying more attention to it though.
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