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Do not take too seriously
Join Date: Dec 2006
Location: Netherlands
Posts: 3,453
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Quote:
Originally Posted by Roger 04 RT
You're right about the ECU entering limp mode but my Wideband O2 measurements show that the BMW/Bosch limp mode actually shifts the fueling several percent leaner then several percent richer than stock from about 14:1 to 15.4:1. The reason is to bracket the operating range of the cat.
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Interesting as that is the complete opposite from what I have found on my K, which runs so rich in limp mode the fuel almost runs out the back of the exhaust. 
Runs pretty nice though, but a fuel consumption of 23mpg (US) or worse is not exactly usable with a total of just 4.7 gallons of fuel.
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BMW R1100S 'Bumble Bee' | HyperPro 3D F&R | motoyoyo clamps | Staintune | some other bits
BMW K1200S 'tri-color ICBM' | WP ESA rebuild to specifications | lots of other bits
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Last edited by throttlemeister; 08-25-2016 at 04:42 AM..
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