Anyone running e85?

[markreed]

Just curious if any 4.0L is running flex fuel or dedicated to full e85?

If not, is it a tuning issue? Any data on current injector duty cycle, or thoughts on stock system to support the e85 increase?

I searched but didn't have luck in the c7 area...

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[hubris]

I think it's just too expensive to warrant whatever the gains might be. I don't think APR has any published data on the potential gains, either. Their dyno graphs account only for 91 octane, 93, and 100. People on this platform aren't exactly excited to just try new things on their car to see what it will do. Gotta see data first!

[markreed]

I think it's just too expensive to warrant whatever the gains might be. I don't think APR has any published data on the potential gains, either. Their dyno graphs account only for 91 octane, 93, and 100. People on this platform aren't exactly excited to just try new things on their car to see what it will do. Gotta see data first!

I have not seen any data from anyone testing it. Does Audi have any vehicles set up to run flew fuels from the factory?

If the fuel system supports it, then the update is very minimal, and APR should be able to knock out a tune with relative ease.

Gains on this type of motor should be significant with zero change to drivability (decrease in fuel economy)...but similar platforms are seeing 10-18% hp increase across the curve for flex fuel with larger gains from dedicated corn cars.

I get that this car is more expensive, but it doesn't mean normal rules of internal combustion are thrown out the window. Some people are looking for higher levels of performance and are willing to do the extra work. Is it too much for me to ask to steal all that hard work? :)

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[jrsAudiA6]

It is my understanding that the 3.0T and 4.0T are not designed for E85. The manual should tell you.