Tried to see if there's an E-85 map for 997.2 from Cobb, there doesn't appear to be. The 997.1 page talks about E-85, not sure map is available though:

https://cobbtuning.atlassian.net/wik...T3RS+Map+Notes

 

You can probably get one of their pro tuners to do a custom e85 tune for you.

 

It doesn't look like there is an OTS E85 map from Cobb for the .2GT3, however they do offer one for the .1GT3. I do think it would be possible to run E85 on a .2, you would just need a protuner to write a custom tune.

 

There's another E-85 thread going on-The Cobb page for the 997.1 GT3 is different than the 997.2-I tried to go to the maps page and compare the differences between 997.1 and 997.2 but the website wouldn't let me switch from a car to another.
Anyway, the .1 page mentions E85, if anyone knows if for that car it's just a matter of installing cobb and using the E-85 map, it would be good to know. So it seems only the .1 cars have it available(!)

Would like to know the benefits and or issues of running E-85-would it help with intake deposits as a side benefit? Does the entire fuel path tolerate E-85 which would normally be corrosive to certain metals and plastics/rubber? I have E-85 stations blocks away, and the other thing is what's the shelf life of E-85 compared to other fuels?
And as I recall, the GTLM RSRs were already running VP E-85 fuel starting around 2014. From what I read at the time that cellulosic fuel was made from sugar cane bagasse, and also chicken/livestock waste:
https://advancedbiofuelsusa.info/por...rs-at-daytona/

So the data they've gathered would show benefits and drawbacks-what happens to motor oil change intervals? Engine metals, fuel lines etc?
I grew up in Brazil and when the first generation 100% Ethanol cars hit the market around 1980(!), corrosion was the biggest problem. Some cars were still carbureted, and then all eventually became fuel injected and corrosion compliant. Cold engines still needed a small tank of gasoline for warming up the car until it could burn the E100. I was a kid and noticed buckets of water pouring out of the exhaust, steam etc, especially on a cold day. Eventually cars then became flex fuel, with Brazil being unique in that just about every gas station sells 100% ethanol at the pump. Prices fluctuate of course between gasoline and ethanol, so consumers there jump from gas to alcohol depending on what's cheaper, and flex fuel will adjust to whatever the blend ends up being. So eventually flex fuel vehicles made their way to the US market-

Flex fuel kit for the GT3 would be excellent if possible, but of course as mentioned what are the long term benefits or drawbacks?

 

Cobb does have a Flex Fuel setup with sensor and other hardware for Subaru cars-

https://www.cobbtuning.com/cobb-flex...a-deeper-look/