Damn....I'm kinda interested in this as I'm picking up a new ('08 model) XT on friday. Its having a comfort kit fitted and will be re-flashed at the same time.

When I rode the bike the fan cut in when I was in traffic etc.......the way I imagined it would...it also ran for a bit after I turned off the bike......fair enough but not great.


But if the new re-flash has the fan coming on only when you move...there doesnt seem much sense in that !!

Even with the comfort kit fitted should I tell them not to re-flash it ???????

Any advise please ???

Thanks.
Eric.

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'09 XB12XT
'02 Beta Alp 200
'82 + '83 CX500 euroSports's
'83 CX650 Custom
Green "4 Legged" SUV (now galloping the great plains in the sky !!)

Just read the Autmn edition of American Thunder and on page 5 on the Uly review it says,

"The latest ECM mapping update installed at the 20,000 mile service has improved the warm up procedure and also altered the way the cooling fan runs. It’s very rare for it to come on now"

So what to believe now ??????????

Eric.

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'09 XB12XT
'02 Beta Alp 200
'82 + '83 CX500 euroSports's
'83 CX650 Custom
Green "4 Legged" SUV (now galloping the great plains in the sky !!)

My advice would be to tell them NOT to reflash it - but I think the dealer's hands might be tied. I think its a directive from Buell and if they don't follow orders, it could invalidate warranties etc. It's worth a try though.

Believe me on this one Eric. The fan is not controlled by temp anymore. It is speed controlled - and I mean bike speed not engine speed. I can pull the clutch on mine coasting downhill and the fan will come on at 18mph and not go back off again until I drop to about 15mph. I could semi-accept this if we lived in Florida or we had to hack through mid-afternoon commuter traffic in Califoria but I can be on the motorway doing a steady 70mph in bollock-freezing weather and the fan is on flat out - AND I have a right hand side airscoop fitted to mine. The engine is getting plenty of cool air.
When I first encountered this problem, I checked over the US site BuellXB Forums and there are quite a few cases of bewildered customers who've taken their XB into their local dealership for a new drivebelt or something or other, only to find that they've now got their fan coming on all the time. At least my dealership told me what they'd done.

I couldn't. I've been commuting in plus 45 degrees all summer. I have the RH scoop fitted, and the fan only came on once I'd stopped. Apart from the fact that it'd drive me nuts (cue Digger), I can't see that it's necessary for the fan to be on all the time, unless HD know something I don't, and the bike will self destruct after a certain length of time

_________________
Wear the fox hat

Yes it will but nowt to do with the fan........'Bic razor'

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Mithered ta death.
92 MB
96 S2T
98 S1W
00 M2
01 X1
03 P3
10 CR

Engine temp control via road speed is a stupid idea. What sort of logic was it based on

Ok so the XB engine/frame setup does not work to start with but with a few miles and a couple of mods it is ok.

This sort of thinking, with the 08 plus XB bikes, sounds very much like an after thought bodge to me.

Here's what Buell says about the new firmware for Ulys...

"Although not required, to maximize the benefit from the rider comfort kit, a new electronic fuel injection calibration is available for installation. See your local dealer for detailed instructions.
Note: The new calibration uses a combined vehicle speed and engine temperature based strategy to optimize the cooling effects of the motorcycle's fan while minimizing the fan's run time."

Most people on BadWeb (lots of kits fitted over there) have found that the comfort kit alone significantly reduces the time the fan runs and the consensus seems to be that most people prefer to fit the kit but skip the reflash, which is what I'll be doing. Apparently with the new firmware the fan stops altogether when you turn the engine off, which seems counter-intuitive, not to mention removing one of my favourite oddball characteristics of the bike.

If Buell says it's not required then I'm going to skip it. I'll be putting a label on my ECU saying something like "Do not update ECU".

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'08 X / '16 SX

Shaken, I hope that you weren't being literal about the label - you really need to put it on the diagnostics socket - that's what they will connect to to reflash the ECM.

Since fitting the Uly RH scoop to my STT the fan doesn't run at all when I stop! I have to leave it ticking over stationary for another 4 or 5 mins for the fan to kick in when I turn the key off!


As the yanks say "go figure"






Or as I say "well bugger me"

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aka DrBagiva, DrBusqvarna, Uncle Knobhead

You will find that after about 6k miles the fan comes on less and less. My bike is 13k miles and it only comes on now if I thrash it hard. Tonight I was running it on the stand and the fan did not come on for 5 min plus.

Try this once the bike is run in. If the fan comes on, when you turn the ignition off, switch it on then off again and see if the fan goes off. Mine will stay off most of the time. Saves the battery and wear on the fan bearings.

Part of the "comfort kit" is the R/H scoop which the bike should have had as part of its design in the first place IMO. This and a better flowing can all helps to cool the engine better.

[quote="DrBuella"]Since fitting the Uly RH scoop to my STT the fan doesn't run at all when I stop! I have to leave it ticking over stationary for another 4 or 5 mins for the fan to kick in when I turn the key off!


As the yanks say "go figure"




Yes but your fan is still temperature controlled. So your RH scoop will indeed reduce the amount of time your fan comes on.

However, to repeat, the new reflash results in the fan being controlled by the bike's speed. Hot, cold, RH scoop, no RH scoop, the fan will come on when the bike hits 18mph - and not go off again until you've dropped below 15mph.

Maz has already confirmed this in his post.

It does not run at all once the engine is switched off. It is completely different to the old set up.
For those of us who've become victims of the new reflash, those who soon will be and those about to receive a new XB, we need a way to get the fan temperature- controlled again.
Does anyone know of a good aftermarket temperature sensor that will stand up to high air temperature, take vibration etc - and a good place / method to mount it? Alternatively, does anyone know how to make use of the existing temp sensor without buggering up the ECM settings? (ie) a re-wiring job?
I thought about going into the oil line with a temp sensor. It would work, but I'm not sure it would be fast enough in terms of operation. (ie) coming on in time. Any views anyone?

Putting an air cooled engine inside a petrol tank was always a daft idea, they need to be liquid cooled like the Helicon.......given the choice, I would liquid cool all XB's in the river outside my shop

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Mithered ta death.
92 MB
96 S2T
98 S1W
00 M2
01 X1
03 P3
10 CR

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08 Specialized Langster

Um a bit of a problem this one given that the new fan control is in the ECM prog. Maybe using a pre 08 ECM and SPY or even a new 08 ECM without the re-flash, if you can get one that is. You could build something to control the fan but it will not be easy given the problems.

I do not think that an easy or cheap cure, for the 08 fan re-flash, is around at the moment.