93/100/E85 Dyno Runs on the race motor (scheduled for April 22nd)

[honeybadger]

Any way you could post a chart with the final tune graphs for each tune?

You mean with the data logs that cover fuel, air, rpm, knock sensor activity, etc.?

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[BKTorch]

You mean with the data logs that cover fuel, air, rpm, knock sensor activity, etc.?

just the hp/tq and air/fuel over RPM graphs overlaid on 1 chart. Like the chart you posted but of the final runs for each tune. I am assuming those runs that are shown are just E85 runs.

 

[honeybadger]

Ohh, gotcha. Those are the final runs: Blue is E85, Pink is 100, and Green is 93.

 

[BKTorch]

Ohh, gotcha. Those are the final runs Blue is E85, Pink is 100, and green is 93.

oh. then nevermind. Thanks for clarifying!

 

[honeybadger]

So this weekend I ran the 100 octane and E85 tunes back to back. Ran a full tank of 101 through it and then switched back to pump E85 for the afternoon sessions.

There was no contest - NONE. The E85 pulled harder in the midrange and the engine ran cleaner and cooler. Also, $9 per gallon vs $2.30 for the E85 from my local Sunocco.

 

[Phoenix]

So this weekend I ran the 100 octane and E85 tunes back to back. Ran a full tank of 101 through it and then switched back to pump E85 for the afternoon sessions.

There was no contest - NONE. The E85 pulled harder in the midrange and the engine ran cleaner and cooler. Also, $9 per gallon vs $2.30 for the E85 from my local Sunocco.

CORN JUICE

 

[honeybadger]

CORN JUICE

For sure. The only downside IMHO is the 50 gallons of E85 I burn through a day at the track

 

[Phoenix]

For sure. The only downside IMHO is the 50 gallons of E85 I burn through a day at the track

lemme get my tune and i can help you with that. have you tried the expensive e85 yet?

 

[honeybadger]

lemme get my tune and i can help you with that. have you tried the expensive e85 yet?

Not yet. The stuff I get locally tested at E82, so have been happy with it. Been thinking about testing some Sunocco E85R or tuning for some Ignite in the future.

 

[JAJ]

Not yet. The stuff I get locally tested at E82, so have been happy with it. Been thinking about testing some Sunocco E85R or tuning for some Ignite in the future.

There's been an E85 gizmo thread on this forum that's run for the last three weeks or so, and somewhere along the line someone pointed out some articles about E85's ability to add power, etc. According to this new information, the benefits of added ethanol drop off pretty fast (rapidly diminishing returns) past about E50 or so. It could well be that if you can get E70 or higher from your local gas station, there won't be a practical gain in performance if you switch to lab-grade certified race fuel E85. What did stand out though was how variable pump "E85" actually can be - one article used pump E85 for testing and it assayed at E40. They still got plenty of power, but they were definitely way short of the labeled ethanol level.

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