k4nnon Posted February 8 Report Share Posted February 8 Hey all, Quick question about ethanol content and stoich. When i last tuned my car it was on summer blend about 83-85% from our local pumps and regularly tested to be pretty consistent at that percentage. I recently installed an ethanol content sensor in the car and its reading the winter blend at 66% currently which seems correct. Now with the winter blend being at 66% should i change my Stoich values in my fuel setup to reflect the e66 or leave the values at what they were when i tuned last on summer e85? Thanks for any help or input.. Quote Link to comment Share on other sites More sharing options...
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