Thinking About Switching to E85?
If you're looking for one of the best bang-for-buck performance upgrades for your Golf GTI, Golf R or Audi S3, E85 should be high on your list.
For turbocharged EA888 engines, switching to E85 can unlock significant gains in power and torque while also helping the engine run cooler and more consistently under load. Better yet, when paired with a Galano Engineering Flex Fuel tune, you get all the benefits of E85 without sacrificing the convenience of everyday driving.
What Exactly Is E85?
E85 is a fuel blend made up of approximately 85% ethanol and 15% petrol. The ethanol component is typically produced from renewable plant-based sources such as sugar cane and corn.
While that's great from a sustainability perspective, what enthusiasts really care about is performance.
Compared to regular 98 RON fuel, E85 has a much higher resistance to knock. This allows your tuner to safely increase ignition timing and boost pressure, resulting in more power from the same engine combination.
How Much Power Can You Gain?
The exact figure will vary depending on your setup, but the gains can be impressive.
On a typical Stage 2 MK7 or MK7.5 Golf R, it's common to see an increase of 30-50 horsepower when moving from a 98 RON tune to an E85 tune with the appropriate supporting modifications.
For many owners, it's one of the most noticeable upgrades they make. The car feels stronger throughout the rev range, throttle response improves, and acceleration becomes noticeably more aggressive.
It's not just about peak power numbers either. The extra torque available through the mid-range is often what puts the biggest smile on people's faces.
Cooler Running Temperatures
Another major advantage of E85 is its cooling properties.
Ethanol absorbs more heat during combustion than traditional petrol, which helps reduce intake and combustion temperatures. This can result in more consistent performance during spirited driving, track days, drag racing, and roll racing events.
Less heat soak means the car is able to maintain its performance for longer, especially during Australia's warmer months.
The Flex Fuel Advantage
Years ago, running E85 meant committing to E85 full-time.
If you couldn't find ethanol at a servo, you were often stuck trying to locate fuel or switch back to a different tune.
That's where a Galano Engineering Flex Fuel tune changes everything.
Using an ethanol content sensor, your vehicle can automatically detect the amount of ethanol in the fuel tank and adjust the calibration accordingly.
Whether you're running:
- 98 RON
- E30
- E50
- Full E85
The ECU automatically adapts.
No changing maps.
No flashing files.
No guessing fuel content.
Simply fill up and drive.
Is E85 Right for You?
If you're already running a tuned Golf GTI, Golf R or Audi S3 and are looking for the next step in performance, E85 is often one of the most rewarding upgrades available.
More power.
More torque.
Cooler running temperatures.
Improved knock resistance.
And with Flex Fuel, the ability to run whatever fuel is available.
For many MQB owners, it's the point where the car truly comes alive.
If you're considering making the switch, get in touch with the team at Carbon Autohaus. We can help you choose the right supporting hardware and pair it with a custom Galano Engineering Flex Fuel tune to get the most out of your Volkswagen or Audi.