Gains from E85 (ethanol) on an N/A bolt on 370Z

jrb55gh

My butt dyno feels ethanol power gains similar to Vitviper’s dyno. With my Ecutek tune there is a performance gain with 47% ethanol compared to 93 octane E10. I have filled up with the 47% combination twice with a thankful of 93 octane in between. I have confirmed the more powerful “feel” twice.

The car definitely feels faster even at part throttle with the ethanol blend. When calling for a little extra torque, the amount of throttle pedal movement required is less with the ethanol blend. The extra torque available at light throttle has reduced the number of situations where a downshift is required in stop and go traffic.

During full throttle acceleration the car rips through the gears more quickly than with 93 octane.

In summary at 100 degrees F the ethanol blend performs about the same 93 octane at 80 degrees F. Below 60 degrees F this much ethanol may not be a good idea because the fuel required to maintain the afr at full throttle may exceed the stock injectors’ capability. But at summer temperatures high concentrations of ethanol offer a nice pick me up.

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