Yes, the alcohol is extra fuel so you will run richer if you don`t trim the fuel injector delivery. I`d say 5000cc/min of 50w50m wouldn`t have much effect on the AFR, I only had tro start relly trimming fuel out when running 1.2l/min of 25w75m mixture.
You`d have to trim 100cc/min of fuel to account for 500cc/min of a 50w50m mix.
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VW Mk2 Golf 16VG60 - Mitsubishi GTO TT
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