Hi i am very happy with my new toy xb12x ulleyses when trying to accelerate hard from low rpm i get stuttering around 2,500 to 3000 rpm if i shut throttle and open slower no problem revs right through cleanly its got non standard pipe could this be the problem it may need setting up for it and i dont have a clue about how to do it apart from i need some leads and software any ideas welcome cheep solution would be even better many thanks .

Get your lead and ecmspy software sorted then start with a TPS reset. You can read a guide on how to do it on the "How To" section

viewtopic.php?f=17&t=13

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"With square conduct, level steps, and upright intentions ..”

However, this is this at WOT... I had this kind of issue when I was doing Ulytune (which I haven't finished yet cos I have a garage full of other Buells seeking attention).

Info here:

viewtopic.php?p=147799#p147799

I think you need to learn to ride the bike in a more sedate manner. The engine is severely lacking at WOT compared to a jap bike, however it does come into its own as you roll on the throttle rather than snap it open...

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08 Specialized Langster

What year Ulysses? From '08 on, no need for ECMSpy for just a tps reset.

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2006 XB12Ss..... 1998 S1W..... 1996 S2T
We do not need the help of our friends so much as confidence that they will help us when we need it. –Epicurus

Tis 06 I think

viewtopic.php?f=4&t=14170

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08 Specialized Langster

Hi thanks for all info my bike 06 ulysess hurrray finally got something that fits my great long legs and is dead cool too cant wait for long summer runs out and about