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FJR Motorcycle Forums
Technical & Mechanical Problems
Oil Pump
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<blockquote data-quote="jestal" data-source="post: 188635" data-attributes="member: 477"><p>From what I have heard and read here the 06 has a returnless fuel system. Where the 03-05 fuel rail had the pressure regulator on the rail with a fuel return line to the tank the 06 would not have the fuel return line and the fuel pressure is dead headed at the rail. This changes the fuel injector injection characteristics and would be one reason that a fuel map for an earlier engine would not necessarily be correct for an 06. Being that the fuel injection system is a speed density system any changes to the inlet system or exhaust would also affect the fuel map from year to year so any induction or air cleaner/airbox changes to the 06 would make that fuel map unique.</p></blockquote><p></p>
[QUOTE="jestal, post: 188635, member: 477"] From what I have heard and read here the 06 has a returnless fuel system. Where the 03-05 fuel rail had the pressure regulator on the rail with a fuel return line to the tank the 06 would not have the fuel return line and the fuel pressure is dead headed at the rail. This changes the fuel injector injection characteristics and would be one reason that a fuel map for an earlier engine would not necessarily be correct for an 06. Being that the fuel injection system is a speed density system any changes to the inlet system or exhaust would also affect the fuel map from year to year so any induction or air cleaner/airbox changes to the 06 would make that fuel map unique. [/QUOTE]
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FJR Motorcycle Forums
Technical & Mechanical Problems
Oil Pump
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