OFC Ranger
Well-Known Member
A tune overrides the stock programming. To what extent on a technical level I don't know. But there is a reason that they sell tunes for the various gas you can buy.Im not sure I agree with that internet search. Our stock ECU tunes for 93 and 87... It will automatically detune the engine for 87, it must have automatic knock sensors... So with a tune, id expect the same system to work.
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