Increase MPG's?

Hmm ... 50 MPG is 4.7l/100km ... I'd expect something not too far from that on a 570! At least! I'd expect less consumption ... Torquey high-compression FI bike should be in the low 4's per 100km (~55mpg?)? I'd think?

What's the MPG or consumption of your 570?

Wolfy said:

So I used Taffy's jet kit on my 650 and am now seeing about 50 MPG, not to mention it lights right off with the button. (If you have not tried his kit yet, I strongly recommend you do so)

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Got one of those putting on the 550 soon... was there much tinkering with it to run properly ?

i have Taffys jettingkit in my 2008 FS650 with acro, no tinkering at all, the bike just started after the change, and can run on a very low rpm on idle,,,, i also did the ac pump mod that comes with the kit


the bike runs great, really no need to adjust anything, it feels so much better than stock , easy start, no bogging at all

money well spent!

Wolfy said:

So I used Taffy's jet kit on my 650 and am now seeing about 50 MPG, not to mention it lights right off with the button. (If you have not tried his kit yet, I strongly recommend you do so)

My question is, is there anything I can do to my FE570 to get close to the same mileage I'm seeing from my 650? It just seems crazy that the 650 conserves more fuel than the 570.

Cheers!

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I have 2 570's and both get 52-53MPG and I run 14-44 & 13-42 gears with the Usual mods, Akra exhaust & map and a JD tuner with seat mod and not cruising around either so prolly another 2-3MPG Is possible.

Both My 570 Bergs get 53mpg's freeway at about 65mph with street tires. about 35mpg off-road tried playing with map switch didn't change mpg's or at least not that I could tell maybe 1+ or 1- mpg both have DNA air filters FS has a aftermarket exhaust map set at #2 (wild)

Wolfy said:

So I used Taffy's jet kit on my 650 and am now seeing about 50 MPG, not to mention it lights right off with the button. (If you have not tried his kit yet, I strongly recommend you do so)

My question is, is there anything I can do to my FE570 to get close to the same mileage I'm seeing from my 650? It just seems crazy that the 650 conserves more fuel than the 570.

Cheers!

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Cheers David!

I believe the 570 isn't that efficient due to the cam. why do people always suppose that Fi HAS to be brilliant on MPG?

when we heard that Husaberg were going to Fi the very first comment was "oh great! we'll have amazing MPG!" and my first thought was "OH balls!!!!!".

Fi on bikes is a crude beast. not a bad start but can and will do better one day.

the doomsdayers like me said that we wouldn't be able to work on our own bikes, that we'd have to visit the dealer for everything, that water, mud and electrics and fuel don't mix.

I think in Husabergs case we were right (sorry to say).

long live the carb I say!

regards

Taffy

why do people always suppose that Fi HAS to be brilliant on MPG?

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Well why shouldn't it be?


All other things equal, fuel efficiency is a function of correct and precise fuel metering. EFI is good at that. So long as the map is good. EFI will precisely meter fuel in varying conditions by way of a number of sensors - that is one of the primary purposes of it - so it is only natural that fuel efficiency improves over a carb.

Given a good map!

But anyway: 55-ish MPG on the 570 seems to be the norm from searching around on the site. I also recall seeing some bikes with considerably worse fuel consumption figures which indicates some sort of problem in some cases.

So what MPG are you getting there master Wolfy?


It is the situation that with a stock EFI Husaberg the exact mapping isn't really easy to know: What map is in installed? What are the values in that map? This is not a fault of EFI technology itself - this is IMO because of how KTM approaches its business in relation to pollution regulations / anti-tampering. Sealed electronics.

There are ways around that of course. Depending on how deep you want to go. Bazzaz / JD tuners. Vortex ECU's if I understand correctly? And!: I'd be quite interested in seeing what happens if a fully open-platform Megasquirt ECU is dropped into a FI 'Berg.

I believe the 570 isn't that efficient due to the cam.

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By what mechanism do you theorise that the cam in the 570 causes increased fuel consumption? What sort of cam would improve it?

Fi on bikes is a crude beast. not a bad start but can and will do better one day.

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How is it crude? Would you like to see, say, additional sensors, different hardware, or more/different computational processing on offroad bike EFI? Which, and why?

the doomsdayers like me said that we wouldn't be able to work on our own bikes, that we'd have to visit the dealer for everything, that water, mud and electrics and fuel don't mix.

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What problems in specific are you alluding to? I haven't seen much written about EFI trouble that requires dealer intervention on these bikes. There is the poor fuel pump in early models and the search for a inline fuel filter and other minor issues, but besides the universal recommendation to "get the competition map!", I am not aware of issues requiring dealer intervention.

Instructions for reading the fault codes are in the manuals for the bike, and if you have problems with them we can surely help you figure it out Taffy.


That said, I'm sure carburetors as a technology will also have a long and successful life.

FI is really the way of the future, It runs more efficient, less working parts and better metering as it adjusts to compensate. FI is very simple to work on and with a little research of how the system works will allow you to trouble shoot much easier. Failing components due to water and mud are not a factor really, no different if one has an electrical issue with their coil etc. Mud and water and other debris has a much higher chance to plug something in a carb than in a injection system. Now if we could only see oxygen sensors on the bikes to compensate for altitude then we would have a perfect system.

I always laughed at all my friends when they told me I was crazy to buy a fuel injected Harley years ago. When I watched them screwing around warming their bikes up and having to wait for warm up to close the choke and the trouble they had holding idle at start up. I just pushed my starter button and was ready to ride with the same if not more power and torque as well more efficient fuel economy.

If we didn't allow for technology none of us would be on this forum using computers to do so. Mail if fine and works well, but the computer is instant.

Just food for thought

My BMW GS Dakar was FI. When it worked, it was lovely... but when a gremlin got in the system, it was very difficult to figure out what went wrong. Almost replaced the injector, fuel filter/pressure regulator, and O2 sensor. I solved the issue but still don't know what the cause was.

FE350 said:

FI is really the way of the future, It runs more efficient, less working parts and better metering as it adjusts to compensate. FI is very simple to work on and with a little research of how the system works will allow you to trouble shoot much easier. Failing components due to water and mud are not a factor really, no different if one has an electrical issue with their coil etc. Mud and water and other debris has a much higher chance to plug something in a carb than in a injection system. Now if we could only see oxygen sensors on the bikes to compensate for altitude then we would have a perfect system.

I always laughed at all my friends when they told me I was crazy to buy a fuel injected Harley years ago. When I watched them screwing around warming their bikes up and having to wait for warm up to close the choke and the trouble they had holding idle at start up. I just pushed my starter button and was ready to ride with the same if not more power and torque as well more efficient fuel economy.

If we didn't allow for technology none of us would be on this forum using computers to do so. Mail if fine and works well, but the computer is instant.

Just food for thought

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Having tuned carb and efi Id have to say efi is faster and more efficient to tune by a country mile. Plus the exposure to raw fuel is eliminated, changes can be undone quickly, you have data logging to guide you, no burning fingers, skinned knuckles or drawer full special tools and expensive jets.

Fault finding is a little harder for those who arent used to efi systems, but the berg manual spells it all out pretty well. As for the efi systems on bergs being crude, Id have to agree to disagree, I think back to the lake 80s early 90's when ford was fitting central efi to inline sixes, those systems were crude.

when efi came out on the 450s then later the 250s fuel consumption went up compared to carbs

reason is the carbs were 41mm but efi throttlebodies got much bigger in pursuit of more power, then in order to stop them coughing at low rpm when you whack the throttle the injectors have to pump a huge amount of fuel in

570 throttlebody is only slightly bigger than the carb but smaller capacity engine and bigger valves ... intake velocity is lower than the 628s ... as a result the main difference is more fuel has to to be pumped in at low/mid rpm with sudden throttle openings

it isn't possible to achieve the same effect with a pumper carb particularly from steady 1/4 throttle to WOT

"efi is so smooth!" yes of course it is ...... they can drown out the cough

Also, FWIW, I would rather have a carb start acting up when I am 20 miles from civilization than EFI.

(And I know how EFI works much more intimately than I do how carbs work).

jmscrttndn said:

My BMW GS Dakar was FI. When it worked, it was lovely... but when a gremlin got in the system, it was very difficult to figure out what went wrong. Almost replaced the injector, fuel filter/pressure regulator, and O2 sensor. I solved the issue but still don't know what the cause was.

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In the beginning I was really intimidated by my FI system as I was used to carburetor. But then my friend explained it and today I prefer it. It is a different way of thinking but more digital, 0 or 1 mindset when I trouble shoot. Remove something and see, measure a value and check, either it is or it's not. A carburetor you need to see and understand the complete picture. Even if you fix the problem it can be flooded or dry. Sometimes it's more about having the right kick, perfect morning fog and the moon aligned.

The FI system is dead, no magic. That's what I like, less fuzzy variables.

BUT when you can't find the problem or something breaks in the wilderness your more or less f**ked unless you have spare parts. A carburetor you can always fix with some wire, ducttape or what not...

I think efi is becoming better on bikes, but I still share many peoples reservations. On the flip side I have taken common rail electronically injected diesel landcruisers deep into the Aussie *ahem* "outback" for months at a time and never had a worry, I dont even give a second thought to car efi reliability these days.

Good discussion ... !

Wolfy - what MPG are you getting on your 570?

And if it's, say, below 50 MPG, what can be done to help it?

miles/gallons.... to lazy to do the math
But I get around 5.5-6l/100 km with my fs570 riding it (sporty) on the road.
I know if I would do my best I could get it around or below 5l/100km but the bike always wants me to give more throttle:giggle:
In my experience the 570 fuel injected bike has better fuel economy compared to my fs650 2008 carb bike I could never get below 6/100...
The 570 on racetrack is almost as economical compared to the 650 on the road I know the 650 had bigger tank but I couldn't get more miles out of it compared to the 8.2 liters with my 570....

HusaBELGfs570 said:

miles/gallons.... to lazy to do the math

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We have computers for that Good old Google search will actually calculate this:

Google search for '5.5 liters per 100 km in mpg' = 42.7662879 Miles per gallon

Don't forget, the Gallon is different than a US Gallon.