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Discussion Starter #1
So I have been perusing this section of the forum, and read about many of the possibilities... There seem to be many. First let me tell you my situation and expectations, hopefully this will help with the suggestions.

I live at high altitude, in a very windy place. The highway speed limit is 75 mph. I often find myself, having downshifted with the throttle wide open and the bike not going anywhere possibly even losing speed. I recently replaced the plugs which were somewhat dark leads me to believe the bike is running rich. Not 100% sure if it is affecting the performance though.

That being said, I am hoping to get a few more HP a 5k rpm and up. I am not trying or wanting to turn the bike into a sport bike. Just get some more juice for the highway. I am envious of all of you living at sea level, the motor is incredible down there. Its just up here the wee struggles, sometimes even to go 65mph depending on the elevation and the wind.

Thanks!!!
 

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I've ridden the Wee from 200 feet below sea level to 10,000+ feet, two up, and there was always ample power. I'd rather throw money at the suspension than try to get more HP.

If it's truly not fast enough for you, your best option would be to sell it and buy a Vee. You're not going to extract enough extra power to make it worth your while.
 

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Discussion Starter #3
I've ridden the Wee from 200 feet below sea level to 10,000+ feet, two up, and there was always ample power. I'd rather throw money at the suspension than try to get more HP.

If it's truly not fast enough for you, your best option would be to sell it and buy a Vee. You're not going to extract enough extra power to make it worth your while.

Its not that the bike is not fast enough. It is just I don't like having max throttle in 5th gear and slowing down below the speed limit. Please help me get the power the wee should have then.
 

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Its not that the bike is not fast enough. It is just I don't like having max throttle in 5th gear and slowing down below the speed limit. Please help me get the power the wee should have then.
As you know, you lose a few HP for every 1000 feet. Nothing you can do about that ...

More displacement or a turbo charger. That's about it ...
 

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Discussion Starter #5
As you know, you lose a few HP for every 1000 feet. Nothing you can do about that ...

More displacement or a turbo charger. That's about it ...
I guess, but I started this topic because other members suggest not having this problem 2 up at high elevation, so I figured I would have no problems by myself. However I have even had this problem riding by myself, but it requires a headwind. I like the vstrom and want to enjoy it and keep it, but either mine is not running like it should or something.
 

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I would go through everything on the bike and make sure there are no vacuum leaks, check air filter, throttle plate position, fuel filter, carb//injectors. you could also change the gearing but you lose torque in the process.

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Have you considered a complete tune up? sometimes small stuff like air filter and plugs can make a big difference.
I found that mine has loose adhesive on the grips and they rotate around as I ride. Especially with the Oxfods keeping my hands warm. When I feel like I'm loosing headway I roll the throttle off against the resistance and when I rotate the grip for acceleration the I have more power. I've been to lazy to pop them off and re-glue them. There are threads about good adhesives here I haven't made use of yet.
I noticed some folks seem to have some wired wrapped around their grips. That might help loose grips not gripping.
 

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Maybe a smaller windshield (i.e. shorty sport version) would help with aerodynamics??? Get an Akro exhaust and loose 12 lbs from the stock muffler........ditch the buddy pegs and loose another 5 lbs.........go on a diet and loose 10 lbs yerself.........fill your tires with Helium........:biggrinjester:
Power: Weight Ratio...........:thumbup:
 

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Ted,
Were your previous bikes used at the same elevations?
Did they suffer similar issues?



If not, you MAY be suffering from a fuel flow issue likely caused by a fuel filter that is getting plugged.



Do a search on the forum for fuel flow test using the Google search and see if that makes any sense.

Another thought: Is your air filter clean?
 

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The simplest (and maybe best) answer is to get a Vee. The 650 is not very amenable to easy HP gains. You can do the SV cam swap (second gen SV cams in place of the Strom ones) get Power Commander, a full exhaust and do a good dyno tune, and get about 10hp. Roughly $1000.
 

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The simplest (and maybe best) answer is to get a Vee. The 650 is not very amenable to easy HP gains. You can do the SV cam swap (second gen SV cams in place of the Strom ones) get Power Commander, a full exhaust and do a good dyno tune, and get about 10hp. Roughly $1000.
He's right. I have an 07 with those mods, and it does pull a lot harder, but the economical thing to do is to get the V. I like the 650 with mods. I think it's the best of both worlds.
 

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Discussion Starter #13
Ted,
Were your previous bikes used at the same elevations?
Did they suffer similar issues?



If not, you MAY be suffering from a fuel flow issue likely caused by a fuel filter that is getting plugged.



Do a search on the forum for fuel flow test using the Google search and see if that makes any sense.

Another thought: Is your air filter clean?
Last bike was 100 lbs heavier but 20hp more. Had no problems at altitude. I already replaced the plugs and even though they only had 7k miles on them the new ones made a big improvement. I am gonna do the air filter next, the plugs indicated rich mixture so the filter might be clogged with dust. Just a guess, I am thinking about trying to washable filter due to the dust here.... Is the fuel filter easy to replace? Last time I changed that on my subaru it made a huge improvement!
 

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Discussion Starter #14
Also I have only owned the wee 3 weeks so replacement with a vee is out of the question.
 

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Also I have only owned the wee 3 weeks so replacement with a vee is out of the question.
What altitude do you live at ?

All of this seems normal except that you said you were at WOT and barely able to maintain speed. That sounds odd. WOT on these things (although not like a VEE), is not standing still either ... Mine at WOT moves my fat ass along pretty well.

When you say "High Altitude", from many of our perspectives you could be talking about 2000 above MSL as we are flatlanders ... So, are we talking 2000MSL or 11,000 MSL ?

Huge difference there ...
 

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You could always try a power commander and lean it out. From what I've been told, there are parts of the map on the DL that are actually pretty fat, so it would be really rich up in the mountains. edit: I thought the MAP sensor should take care of that, but maybe not.
 

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Discussion Starter #17 (Edited)
What altitude do you live at ?

All of this seems normal except that you said you were at WOT and barely able to maintain speed. That sounds odd. WOT on these things (although not like a VEE), is not standing still either ... Mine at WOT moves my fat ass along pretty well.

When you say "High Altitude", from many of our perspectives you could be talking about 2000 above MSL as we are flatlanders ... So, are we talking 2000MSL or 11,000 MSL ?

Huge difference there ...
I live at 7200 Ft, that is location of my house. With regards to my experience on the highway, I was on I80 between Laramie-Cheyenne it is close to 8500ft on the stretch of highway I was really struggling.

I had downshifted from 6th to 5th gear (guess I could have dropped to forth but I did not at the time), and with the throttle all the way open I could not keep 70 MPH indicated, there was gusting wind of unknown speed. I got off the highway to the side roads until the large decent into town you have to use the highway no other way in or out of town in this direction due to mtns (it is about 10 miles downhill more than 1000 feet elevation drop).

have not ridden this passage interstate since replacing the plugs, but have noticed the bike is more perky just riding to work and back about 5 miles. I used the standard cr8s, but think I might need to go hotter due to the cool temps here, and older plugs indicating a rich condition.

Someone mentioned the windshield position, it is in the middle I believe I have not adjusted it since purchasing the bike 3 weeks ago.
 

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I live at 7200 Ft, that is location of my house. With regards to my experience on the highway, I was on I80 between Laramie-Cheyenne it is close to 8500ft on the stretch of highway I was really struggling.

I had downshifted from 6th to 5th gear (guess I could have dropped to forth but I did not at the time), and with the throttle all the way open I could not keep 70 MPH indicated, there was gusting wind of unknown speed. I got off the highway to the side roads until the large decent into town you have to use the highway no other way in or out of town in this direction due to mtns (it is about 10 miles downhill more than 1000 feet elevation drop).

have not ridden this passage interstate since replacing the plugs, but have noticed the bike is more perky just riding to work and back about 5 miles. I used the standard cr8s, but think I might need to go hotter due to the cool temps here, and older plugs indicating a rich condition.

Someone mentioned the windshield position, it is in the middle I believe I have not adjusted it since purchasing the bike 3 weeks ago.


I didn't remember the exact calculation from my flight training days so I looked it up. It is approximately 3% per 1000 feet loss .. So, lets say 8000 feet is about 25% less output than at sea level.

So, the wee is about 67 HP at sea level ? And thats at 8200 RPM. I think that is right ... 67 -25% is about 50 Horsepower. On a 450lb bike with 2 people, in the wind, on hills.

Im not going to ask your weight but assuming 2 people, that is at least 300 pounds in people ...

So, I'm not so sure that what you are seeing it really that out of line ... Maybe you have a vacuum leak or something like others have mentioned (fuel filter etc.), but maybe not.
 

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Discussion Starter #19
I didn't remember the exact calculation from my flight training days so I looked it up. It is approximately 3% per 1000 feet loss .. So, lets say 8000 feet is about 25% less output than at sea level.

So, the wee is about 67 HP at sea level ? And thats at 8200 RPM. I think that is right ... 67 -25% is about 50 Horsepower. On a 450lb bike with 2 people, in the wind, on hills.

Im not going to ask your weight but assuming 2 people, that is at least 300 pounds in people ...

So, I'm not so sure that what you are seeing it really that out of line ... Maybe you have a vacuum leak or something like others have mentioned (fuel filter etc.), but maybe not.
Thanks for the info. So per previous suggestions I think slight improvement will be made by replacing the filter, it is very dusty and dirty. Not surprising considering where I live and how windy it is. I think you are right, between the power loss, a headwind and 175 lbs of me. The little twin just can't do it. This is really unfortunate. I had managed on a calmer day to get out of town, and ride the bike 1100 miles in a few days. Although all but 100 or 200 miles of these were at sea level, where the motor handled beautifully. Lots of mixed feelings about the wee-strom at this point.
 

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quick and easy would be to drop the front sprocket number up front and increase it in the back. Around a 100+ bucks. I just got my Wee and it sure is lacking power. It is just a bike with 60 horses..... I like it but dam it need more coming out of the corners, for me..
 
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