Quote:
Originally Posted by PPMKING
EVO tune allows you to use various fuel octane (93 to 100 octane) without getting a customized tune for each fuel octane. The standard tune is only 93 octane.
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That's interesting. Any word on how it works? I believe that the BM3 Flex-Fuel tune uses an ethanol sensor but maybe Carbahn just keeps advancing timing until it senses a knock? Honestly the latter makes more sense since octane is ultimately what matters, not necessarily ethanol content.