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Discussion Starter · #1 ·
Anyone know for sure what the Ethy switch or plug realy does. What effect it has on the motor and maping.

I know from my petro-chem back ground that alcohol likes to take water in. It then will raise the Octane in theroy. Will the ECU then add timing to the mix when the switch or plug is opened up?

Has anyone dynoed a sled with the same fuel and air with the switch in both positions? :dunno:
 
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