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  1. Very high fuel usage yet AFR's not rich or lean'ish??

    General Nissan Skyline Chat
    Hi all, bit of a weird one... just trying to chase down some fuel economy gremlins. I'm very confused about what i'm seeing in terms of economy but what i see from my wideband and dyno AFR's. Basically, i'm getting around 200-220km to a tank, not crazy driving, just normal driving. Fuel is...