
21 Nov 2011
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Join Date: Apr 2001
Location: Norway
Posts: 1,379
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Quote:
Originally Posted by Fastship
Some bikes are equipped with knock sensors which act as a proxy to detect the octane rating of the fuel under the conditions under which the engine is operating and can adjust the ignition timing accordingly therefore, intrinsically “switch the mapping” whilst others with EFI will adjust the injection parameters also.
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Are there any other bikes then BMW that use a knock sensor? Do you know if it alters the mixture (on the BMWs)? As far as I know they can use Super on the emission-tests so it should be possible to pass the test on Super and run fatter on low-octane.
Can you wire a knock-sensor to MegaSquirt and use it for mapping?
Back to the switch..... There is a switch on the (old) BMW G450X Enduro. I'm not sure if it helps for low-octane but it helps a lot where there is low traction.
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