For years, California enthusiasts have dealt with some of the highest fuel prices in America while simultaneously being told every modification known to mankind might somehow offend the state emissions gods.
Now, a new California bill could finally change one of the strangest automotive restrictions in the country.
Assembly Bill 2046, also known as the “Access to Affordable Gas” bill, is advancing through the California legislature and could legalize federally approved E85 conversion kits for more vehicles across the state.
And honestly? This is one of the biggest potential wins California car enthusiasts have seen in years.
Because suddenly:
- Turbo builds become cheaper to run
- Flex fuel conversions become more accessible
- Ethanol tuning may finally go mainstream in California
Which means half the state’s boosted car community is currently staring at their fuel injectors with dangerous optimism.
What Is AB 2046?
AB 2046 was introduced by Assemblymember Rhodesia Ransom and aims to allow California drivers to install federally approved E85 conversion kits on compatible vehicles.
According to the legislation coverage:
- California is currently the only state where these conversion kits are prohibited
- The bill passed the Assembly Transportation Committee unanimously
- It now heads to the Appropriations Committee before potentially moving to the Senate and Governor Gavin Newsom for approval
That’s a massive shift for enthusiasts, commuters, and performance tuners alike.
Especially when California gas prices continue to look like luxury watch pricing.
Why E85 Matters for Performance Cars
If you’ve spent any time around modern turbocharged builds, you already know E85 has become one of the most popular fuels in performance tuning.
E85 is a blend consisting of:
- 85% ethanol
- 15% gasoline
And unlike traditional pump gas, E85 offers several performance advantages:
- Higher octane resistance
- Cooler combustion temperatures
- Increased knock resistance
- More aggressive ignition timing potential
In simple terms:
Turbo engines absolutely love it.
That’s why:
- Supra owners run it
- GT-R owners run it
- LS builds run it
- EcoBoost guys discovered it and immediately turned the boost controller into a roulette wheel
Why California Enthusiasts Have Wanted This for Years
California already has E85 fuel stations throughout the state.
The problem has always been legality surrounding conversion systems for non-flex-fuel vehicles.
According to the report:
- Approximately 1.1 million flex-fuel vehicles already operate in California
- Existing E85 fuel infrastructure is already available statewide
This bill would potentially allow more enthusiasts and commuters to legally access that fuel using approved systems.
That matters because California fuel prices remain brutal.
At one Tracy station referenced in the report:
- Regular gasoline was $5.23 per gallon
- E85 was selling for $2.99 per gallon
That price gap becomes extremely attractive when your turbocharged project car consumes fuel like a small aircraft.
The Performance Benefits of E85
For enthusiasts, the appeal of E85 goes far beyond cost savings.
1. Higher Effective Octane
E85’s high ethanol content dramatically improves knock resistance.
That allows tuners to safely run:
- More boost
- More ignition timing
- More aggressive power curves
Which is basically catnip for turbocharged engines.
2. Cooler Intake Temperatures
Ethanol burns cooler than standard gasoline, helping reduce:
- Intake air temperatures
- Combustion heat
- Detonation risk
Especially important on:
- RB25DET builds
- 2JZ setups
- K-series turbo builds
- Modern direct-injection engines
3. More Stable Power Delivery
Many tuners find E85 setups produce smoother and more consistent power under heavy load.
Particularly during:
- Track driving
- Roll racing
- High ambient temperatures
Or your average California freeway merge where everyone drives like qualifying laps at Le Mans.
What Vehicles Could Benefit?
If the bill ultimately becomes law, potential candidates for E85 conversion could include:
- Nissan Skylines
- Subaru WRXs
- Mitsubishi Evolutions
- Ford Mustangs
- Chevrolet Camaros
- LS-swapped builds
- Toyota Supras
- Honda turbo projects
Basically:
Anything boosted suddenly becomes much more interesting.
E85 Isn’t Magic — Supporting Mods Still Matter
This is where many people get themselves into trouble.
Switching to E85 usually requires additional modifications because ethanol demands significantly more fuel volume than gasoline.
Common supporting upgrades include:
- Larger injectors
- Higher-flow fuel pumps
- Flex fuel sensors
- ECU tuning
- Fuel pressure upgrades
Ignoring those requirements is how people accidentally discover what melted pistons look like.
Very educational.
Very expensive.
The Environmental Side of the Conversation
Supporters of the bill also point to environmental benefits.
According to industry officials quoted in the report, E85 can produce up to 80% lower carbon intensity compared to traditional gasoline.
The fuel is also:
- Produced domestically
- Less dependent on foreign oil markets
- Less vulnerable to refinery disruptions
That combination of:
- Lower cost
- Performance potential
- Reduced emissions
…is a major reason why bipartisan support has emerged around the bill.
Which in California politics is honestly rarer than finding an untouched 240SX.
Could This Change California Car Culture?
Potentially, yes.
If legalized, federally approved E85 conversion kits could:
- Lower operating costs for enthusiasts
- Increase legal flex-fuel tuning options
- Expand aftermarket support
- Encourage modern performance tuning growth
And perhaps most importantly:
It gives enthusiasts another pathway to keep internal combustion performance alive in California.
That’s a conversation many automotive communities are paying very close attention to right now.
Final Thoughts
California’s AB 2046 could become one of the most important enthusiast-focused automotive bills the state has seen in years.
For performance enthusiasts, E85 represents:
- Affordable high-octane fuel
- Better turbocharged performance
- Cooler operating temperatures
- Expanded tuning potential
But like every modification trend, success depends on doing it correctly.
Good tuning.
Proper fueling.
Reliable hardware.
Not “my cousin installed it in a parking lot with zip ties and optimism.”
As the legislation moves forward, California’s tuning community will be watching closely.
Because for once, a fuel-related headline in California might actually make enthusiasts smile instead of immediately checking their wallet.
Learn about the California E85 Conversion Kit Law and shop for E85 conversion parts at www.prostreetonline.com and don’t forget to check out wear.prostreetonline.com.
