Snap
XS650 Member
Has anyone tried these yet ? I have ordered a set , should be here next week . If they do what they say I will be very happy .
http://www.thunderproducts.com/u_f_o.htm
http://www.thunderproducts.com/u_f_o.htm
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U.F.O.
- Thread starter Snap
- Start date
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- Tags
- carburetors mikuni slides
Scroll down on this link http://www.xs650.org.au/Racers.htm until you get to the UFO installation guide in .pdf format down load and read, seems to be more to it than meets the eye
shaas
shaas
I read the installation manual and it doesn't sound that bad to me and a potential $10/hp is a bargain. Looks like an afternoon job to me. So I'd plan a weekend given my track record.
Mellowyellow
XS650 Addict
Sounds very interesting, would like to see some results from people before i jump in.
Where are the installation instructions? How do they stay attached to the bottom of the slides? Looks like they would take about 10 min to install and hours to tune.
Mellowyellow
XS650 Addict
Now I see why they take so long to install.. it's the time to secure the U.F.O to the slide. I wonder about the part that says reduce the pilot size by half. So you're going to have to run like a 12.5 pilot? 
Did i make it to much work to access the pdf file 
Here's a cool review of the UFO from a snowmobile site. Sounds like its tricky to tune and will cause fuel mileage to drop big time without modding it a bit.
http://web.telia.com/~u97016182/tech/ufo.htm
http://web.telia.com/~u97016182/tech/ufo.htm
