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FJR Motorcycle Forums
Technical & Mechanical Problems
Fi2000R Fuel Injection Module any experience?
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<blockquote data-quote="supertankerm60a3" data-source="post: 1219013" data-attributes="member: 20650"><p>I saw the following line and my BS detector went off.</p><p></p><p>Installed with a properly operating FI system the FI2000R can provide some increased power through tuning the air fuel mixture to provide<span style="color: #ff0000"> maximum angular movement </span>to the crankshaft at any given throttle opening.</p><p></p><p>Perfect stoichiometric ratio is about 14.7 to 1 by weight air to fuel. The best power ratio is about 13.5 to 1 air to fuel by weight. The most efficient (LBS fuel to horsepower hour) is about 15.5 to 1 air to fuel by weight. Fuel controllers do NOTHING but trick or fool your FI computer into changing the ratios from one to the other(often by just feeding the computer a fake ambient air temp reading). Often this gives your computer a serious schizophrenic complex.</p><p></p><p>The FJR's computer attempts to keep the ratio at stoich for pollution control. When you push the revs above 5000 the computer switches to the power ratio.</p><p></p><p>Since you have no place for the O2 sensor all I can say is putting it back the the rock solid stock rocket that all FJRs started out as means you need to have a fitting welded into the system.</p><p></p><p>IMHO these aftermarket fuel remap systems are nothing but trouble.</p></blockquote><p></p>
[QUOTE="supertankerm60a3, post: 1219013, member: 20650"] I saw the following line and my BS detector went off. Installed with a properly operating FI system the FI2000R can provide some increased power through tuning the air fuel mixture to provide[COLOR=#ff0000] maximum angular movement [/COLOR]to the crankshaft at any given throttle opening. Perfect stoichiometric ratio is about 14.7 to 1 by weight air to fuel. The best power ratio is about 13.5 to 1 air to fuel by weight. The most efficient (LBS fuel to horsepower hour) is about 15.5 to 1 air to fuel by weight. Fuel controllers do NOTHING but trick or fool your FI computer into changing the ratios from one to the other(often by just feeding the computer a fake ambient air temp reading). Often this gives your computer a serious schizophrenic complex. The FJR's computer attempts to keep the ratio at stoich for pollution control. When you push the revs above 5000 the computer switches to the power ratio. Since you have no place for the O2 sensor all I can say is putting it back the the rock solid stock rocket that all FJRs started out as means you need to have a fitting welded into the system. IMHO these aftermarket fuel remap systems are nothing but trouble. [/QUOTE]
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FJR Motorcycle Forums
Technical & Mechanical Problems
Fi2000R Fuel Injection Module any experience?
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