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I have read that E85 leads to more corrosion in fuel lines, etc. Also, if you store your car for about 2 months or so in the winter, E85 doesn't hold up too well, am I right?
I am intrigued by E85 but ultimately due to these concerns (and ?availability) a 93 octane map is probably gonna work out best for me
Funny thing is you can drink it! I used to sell fuel and the ethanol plants used to make E85 also make vodka! No lie. One of the ADM plants in the midwest makes ethanol for Grey Goose and E85 The workers told me about a spill on the shop floor where they were all scooping the stuff up and drinking it. But don't drink E85. It is mixed with toxic stuff similar to denatured alcohol. Denatured alcohol is high proof ethanol, which is drinkable but it is then mixed with bitter and toxic substance precisely to keep people from drinking it.
There are two sets of timing beams at the end of the 1/4 mile, also known as the "the traps" and they determine your final speed. "Trap" MPH is an excellent indicator of power, a better metric than elapsed time. A car that traps @ 120 is damn fast while another that traps in the 130s has way more power and will be a monster on the street which is what many aspire to.
I thought I knew the answer but I learned something today. Thanks.
The prospect of flipping back and forth between an E85 map and a regular 93 octane map sounds appealing. A bit of a chore to keep reflashing and changing one's fuel, but nevertheless........interesting!
We make it easy! Other tuners out there sometimes charge for map changes, and some tunes require the ECU to be removed each time. We don't charge, and a map change only takes a few minutes. About as easy as it gets.
Originally Posted by 991.1 Guy
Funny thing is you can drink it! I used to sell fuel and the ethanol plants used to make E85 also make vodka! No lie. One of the ADM plants in the midwest makes ethanol for Grey Goose and E85 The workers told me about a spill on the shop floor where they were all scooping the stuff up and drinking it. But don't drink E85. It is mixed with toxic stuff similar to denatured alcohol. Denatured alcohol is high proof ethanol, which is drinkable but it is then mixed with bitter and toxic substance precisely to keep people from drinking it.
Absolutely do not drink E85. It is not potable in any capacity.
We make it easy! Other tuners out there sometimes charge for map changes, and some tunes require the ECU to be removed each time. We don't charge, and a map change only takes a few minutes. About as easy as it gets.
Absolutely do not drink E85. It is not potable in any capacity.
-Charles@M
Do not drink E85, I was referring to ethanol which is the E in E85. and yes you can drink it. It is made from corn.
When are you going to bring a car to test and tune at PBIR? I'd love to see your E85 tune run down the track.
Last edited by 991.1 Guy; Feb 8, 2022 at 02:41 PM.
Do not drink E85, I was referring to ethanol which is the E in E85. and yes you can drink it. It is made from corn.
When are you going to bring a car to test and tune at PBIR? I'd love to see your E85 tune run down the track.
Yeah, Palm Beach Int. Raceway, great track for 1/4 mile, wish it were closer as we are on the SW side of FL.
M-Engineering is excited to announce our new E85 maps available for 992 Carrera Base and S M-Tuner owners! As always, this is a FREE upgrade to all existing M-Tuner owners and of course a new OTS offering for any new purchasers of M-Tuner.
Carrera S E85 on Stage 1 (stage 2 can expect about 20whp or so more, dyno plots for this configuration coming soon)
-Charles@M
This is really incredible. I'm amazed that the stock injectors can handle the extra fuel requirements for that much power. Would you say the injectors are max'd out in your tune on the Carrera S?
This is really incredible. I'm amazed that the stock injectors can handle the extra fuel requirements for that much power. Would you say the injectors are max'd out in your tune on the Carrera S?
We were really happy with the E85 results on the 992 Carrera platform. DI systems run at really high pressures, so injectors are never generally the bottleneck in the system, it's usually the high pressure fuel pumps or the in-tank fuel pumps. These cars still have some fueling headroom left even after pushing them with E85 on Stage 1 and Stage 2 which is great.
Great results, Charles! I'm considering a stage 2 tune since I already have the downpipe.
With additional torque from running E85, can you comment on PDK's ability to hold down the power for drag racing applications for the rear-wheel drive cars?
Would you encourage going with a stage 2 93 octane tune for longevity reasons for consistent use at the drag strip? Wasn't sure if there was still quite a bit of headroom with E85 relative to PDK's torque limit.
Great results, Charles! I'm considering a stage 2 tune since I already have the downpipe.
With additional torque from running E85, can you comment on PDK's ability to hold down the power for drag racing applications for the rear-wheel drive cars?
Would you encourage going with a stage 2 93 octane tune for longevity reasons for consistent use at the drag strip? Wasn't sure if there was still quite a bit of headroom with E85 relative to PDK's torque limit.
Haven't had an issue yet on the PDK unless you do upgraded turbos. With PDK software coming soon this will also no longer be an issue for holding clutch clamping forces.
I encourage you go for whatever setup meets your goals and desires. I would have no hesitation running the E85 mapping on my personal car if I had a 992 of my own :P
Patiently waiting to see what you do with the GTS models once they land stateside.
Can't wait for them to start showing up so we can get some baselines and comparison numbers done! Final results should be just about identical or close to the S.
There are two sets of timing beams at the end of the 1/4 mile, also known as the "the traps" and they determine your final speed. "Trap" MPH is an excellent indicator of power, a better metric than elapsed time. A car that traps @ 120 is damn fast while another that traps in the 130s has way more power and will be a monster on the street which is what many aspire to.
Is that because elapsed time tends to dependent on the quality of the launch, traction, shifting etc?
Funny thing is you can drink it! I used to sell fuel and the ethanol plants used to make E85 also make vodka! No lie. One of the ADM plants in the midwest makes ethanol for Grey Goose and E85 The workers told me about a spill on the shop floor where they were all scooping the stuff up and drinking it. But don't drink E85. It is mixed with toxic stuff similar to denatured alcohol. Denatured alcohol is high proof ethanol, which is drinkable but it is then mixed with bitter and toxic substance precisely to keep people from drinking it.
Is that because elapsed time tends to dependent on the quality of the launch, traction, shifting etc?
Exactly. Elapsed Time is greatly effected by the 60 ft. time. Rule of thumb here is an additonal 0.1 second on the 60 ft. roughly equates to + 0.2 seconds E.T. In other words the E.T. is highly dependent on traction which is a reason why an amateur driven rear wheel drive car on street tires often records a far higher E.T. than expected.
A less than optimal launch can easely add 0.4, 0.5, or more seconds to the E.T. (60 ft time x 2) and you are a full second or more slower.
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(just kidding).
