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Buell Forum » Big, Bad & Dirty (Buell XB12X Ulysses Adventure Board) » Quick remapping for poor fuel « Previous Next »

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Jamba
Posted on Tuesday, July 03, 2018 - 12:48 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Wonder what should do if i get in a place (like Russia..) where i only get low octane fuel? With buelltooth i have access to ecm, but what do i chance? It would ne nice to have a map for poor fuel which i could download to bike instantly. Some bikes have this "poor fuel mode" built in.
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Shoggin
Posted on Tuesday, July 03, 2018 - 01:04 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Thats an odd concern.

That said, stock Buells have pretty low compression (relatively) and not very aggressive timing curve either. They will eat damn near any fuel without complaint.

Remember that low octane gas actually burns faster than high octane gas. If you and Ewan McGregor get to the road of bones and have a knocking issue, I'd pull some timing out of it.
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Jamba
Posted on Tuesday, July 03, 2018 - 01:33 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Thanks. I forget to mention, i have hi comp pistons. Maybe only way is to get spare ecm and remap it with dyno using poor fuel... but it costs
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Tootal
Posted on Tuesday, July 03, 2018 - 11:57 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Since your's is an 06 you can mechanically remove timing. Remove the two rivets holding the timing cover and remove the internal cover. You will be able to "back off" the timing from there. Scribe a line at the stock location so you can go back to it. Tap out the rivet holes for two small screws so you won't need to drill out any rivets next time.
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Natexlh1000
Posted on Tuesday, July 03, 2018 - 04:16 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

How far back can you get before injection timing gets bad?
I had a H-D mechanic set my X1 by ear to reduce the pinging. result was 32 miles per gallon and sportster-level power.

Funny thing, my X1 got really pretty reliable when it wasn't being maintained by professionals : )
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Figorvonbuellingham
Posted on Wednesday, July 04, 2018 - 06:19 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

I have a fuel map for 87 octane on my Aprilia. Mostly because I live in the stix and they just don't sell premium around here..
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Jamba
Posted on Friday, July 06, 2018 - 08:57 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Thanks, Tootal!
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Glenn
Posted on Saturday, July 07, 2018 - 09:22 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Hi,

This is the thread from Davo which has all the details.

http://www.badweatherbikers.com/cgibin/discus/show.cgi?tpc=32777&post=693815#POST693815


F:\Reference\Buell\Technical Articles\Timing\Setting the Timing.jpg
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