E85 vs. Gasoline | What Fuels the BADD GT’s Record Breaking Runs

Understanding the Fuels Behind Speed

At the speeds the BADD GT achieves, over 310 MPH, fuel isn’t just about combustion; it’s about science. Johnny Bohmer and his engineering team have spent years testing E85 and premium unleaded gasoline to maximize performance, safety, and efficiency.

Gasoline: The Standard Benchmark

Gasoline remains the most common automotive fuel. It’s consistent, easy to tune for, and delivers stable power. For baseline testing and driving, the BADD GT has used premium unleaded gasoline, allowing precise calibration of boost levels and timing. The BADD GT also has a Flex Fuel switch allowing the engine to run both premium unleaded gasoline and E85 right out of any gas station without the need to change any tuning.

E85: The High-Performance Sweet Spot

E85 (85% ethanol, 15% gasoline) offers major advantages for high-horsepower applications like the BADD GT:

• Cooler combustion temperatures reduce engine stress

• Higher octane rating (~105) allows more boost and timing advance

• Cleaner burn with fewer emissions

  
  

When tuned correctly, E85 delivers enormous power potential while maintaining reliability, critical for a street-legal car that also breaks records. That is why the BADD GT used E85 during it's record setting 310.8 MPH (500.1 KM/H) run.

The Takeaway

Fuel choice is a defining factor in performance. For Johnny Bohmer and the BADD GT, E85 represents the pinnacle of real-world, record-breaking capability, blending science and sustainability for ultimate speed.