Update: after driving with it for over a year now, I absolutely love it. I recommend everyone that can switch over to e85, the “good fuel”. It’s so much better and cheaper. Only reason I’m here today is to flash back to stock for warranty work. 😭
Ordered everything a few days ago, can't wait to get it in. That said, I have a gas station less than a 5 minute drive from my house in a 25mph zone. So if I were to drive my tank empty (93 octane), fill up with E85 and slowly drive it home I assume that will be fine as well. By that time (around 2 miles) my guess is that most of the 93 in the fuel lines should be gone by then.
As long as you don’t hit boost, you’ll be fine! We highly recommend installing an ethanol content sensor and gauge to ensure you’re hitting proper ethanol levels
We recommend the Fuel-It! kit. Check out our video tutorial on that kit here: ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-objh7Alp87o.htmlsi=pKFxMg25VjW3EUlC
Can i switch between stage 1 and stage 2 tcu tune without being on a battery? They've both been flashed already on the car but wondering if I still need to be on a charger just to switch back and forth
The process is the same but in reverse. You should wait for the blend to get down to below E60, flash the 93 file, and drive gently until the the remaining blend is to E30 or less.
So you're telling me I can purchase a 2022 B9/B9.5 S5 and run it as a daily driver on e85? This might be the game-changer, hope to get your response soon!
One of our customers wrote a great guide in our 034Motorsport Facebook Customer Discussion Group! facebook.com/groups/034customers/posts/3017675568543728/ Check it out here!
No fuel system or sensor upgrade is required on our Stage 1 and Stage 2 E85 files. You can find our required hardware modifications for our software here: www.034motorsport.com/b9-b9-5-audi-s4-s5-sq5-3-0-ea839-performance-software.html
It is the inverse of this. Fill tank with 93. Wait for ethanol content to go below the E60 threshold. Flash to 93. Idle/LIGHTLY drive until e content comes down to e10-e30.
Yes you could daily drive your B9 S4 on E85. We would recommend occasionally running a tank of pump gas, though we have not seen any adverse effects to running full E85 at this time.
You can absolutely daily on E85 without issue! You may need to fill up more regularly due to the fact that E85 files require 30% more fuel, but that's certainly made up in smiles!
stupid question but how bad is the mileage on e70 ...drag strip is about a 100kms away. do i have to carry extra ethanol with me and has anyone done the mix with 93 or are you supposed to do it with 91 only. 93 will have ethanol at e10 so switchover maybe faster? anyone calculated the exact ratio like 25-75 or exact 70-30
You can expect about a 30% decrease in overall fuel economy when running full E85. Our E85 file is designed for full E85 and we recommend against any mixing with 91 or 93. Bringing extra ethanol with you would be ideal!
If someone does not have the necessary ethanol content to run our E85 file (E60-E85) then we will recommend them to run our pump gas file instead. If someone has access to ethanol, we do not recommend them to blend E85 and pump gas while running the pump gas file.
Who can I message over there about your ethanol sensor install? Heard you tied into the battery terminal in the engine bay instead of fishing everything through the firewall to the fuse box. LMK
That is correct. With the fuel it kit on our B9's, we simply wired in to the positive and negative posts in the engine bays. Feel free to join our Facebook Group if you have any questions! One of our customers wrote a thorough guide regarding install: facebook.com/groups/034customers
