Hallo daar. After lurking around on this site while looking for a XT660R i can finally introduce myself after collecting my "new" ride. I am located in Krugersdorp west from Johannesburg in Gauteng province.
I enjoyed the 207km ride home after collecting the bike in Madimolle (Nylstroom). Coming from a BMW R1150GS i am quite surprized with the comfortable ride although the high screen throughs the wind directly in under the helmet peak.
Fuel consumption rather bad (14km/l) at the moment but still needs to investigate possible reasons. Will post some pictures as soon as i can found out how.

Welkom - welcome

Welcome and congrat's on the new bike..

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Hi mate & welcome, nice looking bike.

Someone on the site will have an answer for your fuel consumption issue.

Cheers, Boneman

Hi and welcome mate.

14Km/l which I reckon is 39mpg in good ol' Imperial - have you checked to see if a bird is nesting in the airbox!

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I know....was shocked as well! Will open airbox to look at filter over the weekend. did establish there is no snorkel and inside is rather dirty. Will clean that first and replace spark plug.
What are the chances of a faulty fuel indicator?
How would one cure a rich mixture?

Sorry about the questions.

I'd suggest a new high flow airfilter such as DNA/K&N, then open up the air box top which perhaps has already been done. Kev's fuel mod (search this site) is a sensible addition or a power commander if you're feeling flush.

What pipes are you running as free flowing pipes obvioulsy help the engine breath. Look also at removing the AIS pipe (search site for how to do this).

Your right wrist may also need calibrating to get more MPG!!

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Hehe welcome to the BEST PLACE IN THE WORLD to get help and friendly advice about the XT range. I too have an XT660X (see list of mods below) and I get a consistent 20 km per litre and even more if on A roads and out of town, so you must sort out the plug, the CO setting, the snorkel and the air filters, and by all means a good exhaust set will help too.
Have fun!!!!!

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(Now sold on, sob) 2011 Blue XT660X with gold wheels, was 26,500 km.
Engine mods: K&N Stage 1 filter, DNA Stage 2 filter, snorkel removed, Kev fuel mod fitted.
Plus: smoked Puig screen, Yam aluminium sump guard, Yamaha / Acerbis handguards, Givi Trekker aluminium side cases, Leo Vince X3 cans plus Kev front fork mod and Fender Xtender. Just fitted Michelin Road Pilot 3 tyres.

SOLD the XTX for a Super Ten 1200. And just bought a Raptor 700 so staying on here for some tips....