KTM 990/950 Adv thread

[BMWST?]

I'm aware it allows the fitment of the Neduro tank but the question was whether it's that that DJ is referring to or whether changing the pipe configuration changes the bikes economy in some way.

i think it is but i will defer to him

[Eddieb]

Looks familiar.

It should do.

[junkmanjoe]

its great to have one only 5 mins down the road from my place.



JMJ

[NordieBoy]

Pyndon had a bit in his thread about twin vs single mufflers.

[ducatijim]

I'm aware it allows the fitment of the Neduro tank but the question was whether it's that that DJ is referring to or whether changing the pipe configuration changes the bikes economy in some way.

There is absolutly NO good reason to fit the highly expensive aux fuel tank to any 990 here.
No, I was not referring to being able to carry more fuel, more the fact that my 990's consumption went from its regular 16/17km/L with factory cans to a credable 19-20km/L while still running the stock EMS mapping( the Akro maps destroy any chance of going far on a fuel load and contribute nothing worthwhile to the bikes overall performance).
I do realise the 'mana' that goes ( along with the majestic expense) with having twin 'akra's' and where that places one in the standing of their peers, so don't worry anyone in disagreement with me - I have been in this scene long enough to know the correct relationship between form and function for the average motorcyclist!!

And, its often a long and expensive road to find just what works best.

[Eddieb]

...more the fact that my 990's consumption went from its regular 16/17km/L with factory cans to a credable 19-20km/L while still running the stock EMS mapping( the Akro maps destroy any chance of going far on a fuel load and contribute nothing worthwhile to the bikes overall performance).

Thanks DJ, thats what I was after, and it's very interesting for me as I'd like a bit more distance per refuel, but didn't really want to fit an extra tank. Another 50 km would be nice and 2km/litre is close on that.

So you fitted a 2 into 1 Y piece, using one factory pipe, or one after market pipe?

I have a 950 so the same rules may or may not apply with the carbs, I don't know if the 990 computer does any sort of intelligent remapping based on the pipes/backpressure/whatever.

My 950 came with a set of black FMF's and a set of decatted factory pipes. Since getting the bike I have mostly run the FMF's but recently I refitted the factory pipes. While the FMF's gave a noticable improvement in response I got sick of the noise, especially when going through quiet villages and around town.
On my first distance trip after refitting the stock pipes I got about 20km more before the light came on, and on one tank got 304kms to the light, the first over 300 ever.

If fitting a 2 into 1 Y piece alone can give an economy increase, without needing outlay on a new pipe as well then that gives an option worth more investigation.

My airfilter is also pretty dirty so I have a new factory filter and a Uni pre filter to fit when I get some time, hopefully that will make some difference as well.

[junkmanjoe]

well after my 950 died on the open road the other weekend,, done a fair bit of investigations into the problem, and its pointed to a dieing fuel pump..

priced a new pump to day, $310 x Austria with 3-4 weeks delivery...

its still working but runs the risk of failing again.. if you ktm owners know of other fuel pump options...feel free to speak............

JMJ & THE SICK 9FIDY..

[Oscar]

well after my 950 died on the open road the other weekend,, done a fair bit of investigations into the problem, and its pointed to a dieing fuel pump..

priced a new pump to day, $310 x Austria with 3-4 weeks delivery...

its still working but runs the risk of failing again.. if you ktm owners know of other fuel pump options...feel free to speak............

JMJ & THE SICK 9FIDY..

Check on AdvRider, there are aftermarket pumps that fit.

[dmc]

well after my 950 died on the open road the other weekend,, done a fair bit of investigations into the problem, and its pointed to a dieing fuel pump..

priced a new pump to day, $310 x Austria with 3-4 weeks delivery...

its still working but runs the risk of failing again.. if you ktm owners know of other fuel pump options...feel free to speak............

JMJ & THE SICK 9FIDY..

You can order a replacement set of points for them. Screw the facet's its a shit load of pissing around and no real benefit. We fitted new points to a bunch of ours and for the cost it doesn't matter if you can change the points ever 20k and still be way cheaper than buying a Facet.

http://www.advrider.com/forums/showthread.php?t=370767

We got ours here,
http://www.moto-services.net/ just search for the model number from the thread.

[Night Falcon]

well after my 950 died on the open road the other weekend,, done a fair bit of investigations into the problem, and its pointed to a dieing fuel pump..

priced a new pump to day, $310 x Austria with 3-4 weeks delivery...

its still working but runs the risk of failing again.. if you ktm owners know of other fuel pump options...feel free to speak............

JMJ & THE SICK 9FIDY..

Hey Joe...went for a sneeky ride on the 690 on the weekend...(don't tell my wife)...had to test the new tire maybe lookin good for an outing in couple 2-3 weeks...u have the 9fiddy sorted by then??

[ducatijim]

Thanks DJ, thats what I was after, and it's very interesting for me as I'd like a bit more distance per refuel, but didn't really want to fit an extra tank. Another 50 km would be nice and 2km/litre is close on that.

So you fitted a 2 into 1 Y piece, using one factory pipe, or one after market pipe?

I have a 950 so the same rules may or may not apply with the carbs, I don't know if the 990 computer does any sort of intelligent remapping based on the pipes/backpressure/whatever.

My 950 came with a set of black FMF's and a set of decatted factory pipes. Since getting the bike I have mostly run the FMF's but recently I refitted the factory pipes. While the FMF's gave a noticable improvement in response I got sick of the noise, especially when going through quiet villages and around town.
On my first distance trip after refitting the stock pipes I got about 20km more before the light came on, and on one tank got 304kms to the light, the first over 300 ever.

If fitting a 2 into 1 Y piece alone can give an economy increase, without needing outlay on a new pipe as well then that gives an option worth more investigation.

My airfilter is also pretty dirty so I have a new factory filter and a Uni pre filter to fit when I get some time, hopefully that will make some difference as well.

Geeze Eddie, you're the first guy to ever be interested in anything I ever mentioned on KB!!!

I am sure that carbs will not respond the same to free flowing, in fact I am quite sure that they will gobble more juice than a 'restricted' system.
Really, my stand on one can versus 2 was only tongue in cheek....a chuck it out there and see who bites kinda fishing trip?( thou I do firmly stand by the Akra comment....incidently, pronounced R-crap-O-vik....yeah...REALLY!)
Carb systems rely on some( the correct amount) of back pressure to suit their jetting and timing. Take away too much restriction and fuel will 'hose' thru the system and be wasted, just because of the increased flow. The electronic injection system has a lambda sensor that measures O2 in the exhaust to ensure the mixture never gets too lean or rich but otherwise will not change things unless a differant map has been installed to instruct the EMS to do so.
I really could not make any reccomendation either way re 1 v 2 cans for your bike Ed, however, if you want just a small range increase, go to Nomad tanks site, theyre in Oz and make very reasonably priced aux rear saddle tanks.
http://www.nomadtanks.com/
Thanks

[junkmanjoe]

Hey Joe...went for a sneeky ride on the 690 on the weekend...(don't tell my wife)...had to test the new tire maybe lookin good for an outing in couple 2-3 weeks...u have the 9fiddy sorted by then??

will see how we get on,, but im working on the problem...

JMJ

[NordieBoy]

will see how we get on,, but im working on the problem...

Now to work on the solution...

[warewolf]

pronounced R-crap-O-vik....yeah...REALLY!

R-crap-O-viCH, surely... don't you watch any tennis?

Win7 users, try this: Windows 7 Akrapovic Themes.

[ducatijim]

R-crap-O-viCH, surely... [/URL].

Oh, silly,silly me

I think my analysis of the free flow effect of exhaust changes on fuel consumption are just a little flawed( I will get in before someone 'pedantic' does!)......my beliefs are based more on the 2 stroke system that will be more strongly affected by freeing up the exhaust than will a 4 stroke. The degree of which a 4 stroke will be affected will be determined by valve overlap I guess and this is not an area I can comment on re 990 motors.

So, what I should have written in reply to Eddie about my increased fuel economy when I fitted my 2 into 1........................

I have no bloody idea.