TwinTurbo.NET: Nissan 300ZX forum - I doubt there is any published info,
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Subject I doubt there is any published info,
     
Posted by not4resaleZ on June 08, 2018 at 11:02 AM
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In Reply To Re: The O2 sensors don't really determine ethanol content posted by freak152000 on June 08, 2018 at 10:39 AM
     
Message that's not what an O2 sensor does. For timing, the car would do what your tuner does, listen for knock, back off if it hears knock, or stop as it approaches MBT. Your tuner may push MBT a little to make sure there is no torque left on the table, but the engine designer calculated timing at MBT and the car timing will stop within a safety margin. Sure the tuner may be able to squeeze a little more out of the engine, but that last few ft lbs may be at a risk the manufacturer is not willing to take.

     
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