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Stoich settings in hptuners

EFI Tuning Fundamentals

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I’ve been tuning in lambda since I started using up tuners about 3 years ago, there is a stoich table in the file that can be adjusted (ie e85, pump gas, flex). Does this table need to be adjusted for the correct stoich value of the fuel that I’m running as a reference point for 1.0 lambda? I’ve got a flex table and have it adjusted based on the ethanol content. Is this the correct way?

Hi Michael, yes, if you're running a flex fuel tune then the stoich table needs to be adjusted correctly to suit the ethanol content you're running. You can still work in lambda with your actual tuning which is what I'd recommend.

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