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<p><font color=red size=3 face="Verdana, Arial, Helvetica, sans-serif">Electronic
Fuel Injection Systems and Fuel Management Products</font> </p>
<p><font color=red size=3 face="Verdana, Arial, Helvetica, sans-serif">Electronic
Fuel Injection Systems and Fuel Management Products for your Snowmobile</font>
</p>
<p></p>
<p></p>
<p> <A href="http://www.techlusion.com/shopping550/html/default.htm" target=_blank>Order
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<p> <font color="#FFFFFF">A direct injection snowmobile has not been developed
by the manufacturers. The technology is difficult to implement. It has been
accomplished in the past in a competition snowmobile, but only with support
of an injection manufacturer who does not allow public dissemination of
the work, and has not allowed unbiased detailed testing of the pollution
emissions from the completed direct injection snowmobile by SwRI. The technology
as implemented in the competition has had some problems, as indicated by
the superiority of the Idaho four-stroke machine in the competition. In
preparation for this task the 2004 UI CSC team has obtained a stock two-stroke
snowmobile and has laid the groundwork for conversion to direct fuel injection.
There are many technical challenges in this effort, including proper design
of the cylinder head, and developing precise electronic control of the fuel
pump and fuel injectors. The FIPK is designed to re-use your factory MAF
(Mass Air flow) sensor and throttle body, so it's a simple "plug and play"
operation that should take about an hour to complete. Depending on your
application, you may have to drill one 3/4" hole in the K&N intake tube
for the air temperature sensor. K&N provides step-by-step instructions with
each kit, so we will mostly cover the installation through color images
that illustrate key steps in the process.
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Fuel Injection - snowmobile - Engineering</font> </p>
<p><font color="#FFFFFF">Fuel Injection - snowmobile Electronics Promoting
the best of Industry, Technology and Manufacturing in the USA
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The EFI snowmobile is the same basic unit as the 2004 carbureted version
with a few key changes, like the addition of injectors, sensors, fuel pump
and the “ECU” black box to control it all. To check the drivability at altitude,
we were allowed to test the EFI’s at 4500 ft and then from there we proceeded
another 500 ft up into the Black Hills of South Dakota, for a total of almost
1 mile above sea level. One mile high means reduced air pressure and on
the day we were there, it was near 100ºF. So the air was really thin. How
would the 700 EFI "carburet"? We drove the EFI’s in very technical terrain,
where precise throttle control was mandatory (unless you wanted to go on
your head!). We could not detect any of the carbureted 700’s characteristic
off idle burble, nor was there any sign of altitude induced richness. The
fuel injection seems to adapt to the conditions correctly, reducing the
amount of fuel injected into the combustion chamber. This made the 700 EFI
snowmobile easier to ride than the carbureted versions we had on hand for
comparison. It looks like the EFI allows the motor to run the way it was
designed to. Polaris claims up to 10 miles more range per tank at full throttle
and 16 additional miles at more moderate throttle openings. This will somewhat
address owner complaints of poor fuel mileage. </font>
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<LI><font color="#CCCCCC"><A HREF="http://www.techlusion.com">Motorcycle
Fuel Injection</a></font></li>
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The next question would be what happens if the Bosh EFI fails. First off,
the ECU will revert to "fail-safe" mode so you can get back home, so you
won't be left out in the "toolies", however you will loose the ability to
adapt to ambient conditions. There are two parts to the software of the
ECU. The first part of the software controls how the engine runs by regulating
the amount of fuel flow through the injectors by polling a series of sensors.
The second part of the software consists of the diagnostics. The diagnostic
software knows what the reading from the sensors should be and is constantly
on the lookout for an anomaly. When the software detects something thats
value is beyond a preset parameter, it first tries to correct the problem.
However if the problem is outside of its on-board capabilities, it issues
a trouble code. A laptop, running the Polaris proprietary software, is connected
to the 700 via a special cable to the ECU access port, which is hidden behind
a plug where the carbureted version has its choke cable. When hooked up
properly and the software is running, the fault code history can be accessed
so the dealer can see what has happened in the past with the EFI system.
<H3> Includes general info, troubleshooting, lubrication, maintenance and
tune-up, adjustements for special use, engine, fuel systems (carburetted
and fuel-injection models, exhaust systems, electrical system, oil injection
system, liquid cooling system, recoil starter, drive system, disk brake,
chaincase, jackshaft and driveshaft, front suspension and steering, track
and rear suspension, off-season storage, and wiring diagrams. Our easy-to-use
snowmobile shop manuals can save you money in repair and maintenance bills.
Step-by-step procedures and detailed illustrations guide you through every
job, from routine maintenance and troubleshooting, all the way to complete
teardown & rebuild.</H3>
<p> You can then go through the "Guided Diagnostics" sequence which is a
standard troubleshooting diagram converted to electronic which will actually
walk the service technician through the steps required to find and fix
the problem, going so far as to provide the wiring diagram and pictures
of the actual component and even where to put the test meter leads. The
ECU contains "Flash" memory like the Bios of a computer. This allows a
Polaris Dealer to re-flash a new "engine map" to correct a problem or
to allow for performance modifications. Polaris has promised to have this
technology available to its snowmobile dealer network before the 700 EFI
Sportsman is released. And they hope the dealers will use the diagnostic
software as just another tool available to them. <a href="http://www.dobeckperformance.com/#Fuel Injection">
Fuel Injection </a> <a href="http://www.dobeckperformance.com/#snowmobile Fuel Injection">
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Kawasaki </a> <a href="http://www.dobeckperformance.com/#Suzuki"> Suzuki
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