The True Power of the BMW G90 M5 with CarBahn’s Stage 1 Controller
The BMW G90 and G99 M5 mark a new era of electrified M performance, combining cutting-edge hybrid torque with a brutal twin-turbo V8. But even with all that innovation, there’s more left on the table.
The CarBahn Stage 1 Performance Controller for the BMW G90 & G99 M5 is a plug-and-play tuning solution created by legendary BMW engineer Steve Dinan. It safely unlocks the full potential of your M5—without modifying your ECU or compromising emissions compliance.
Whether you're shaving seconds on the track or dominating the highway, this controller delivers up to 913 horsepower and 969 lb-ft of torque for a driving experience that redefines what a super sedan can be.
Order your Stage 1 Controller today
Plug-and-Play Tuning That Pushes Boundaries—Without Breaking the Rules
This controller offers up to 913 flywheel horsepower and 969 lb-ft of torque on 100-octane fuel. It’s fully reversible, installs in under an hour, and leaves your factory ECU untouched. That means no dealer detection, no risk to your vehicle’s long-term reliability, and no downtime.
It’s also backed by CarBahn’s optional Powertrain Warranty, so you get performance with peace of mind.
Get the Stage 1 Controller now
Four Reasons the CarBahn Stage 1 Controller Dominates the Competition
1. Massive Power Gains Without ECU Flashing
Calibrated maps for 91, 93, and 100 octane let you safely dial in huge gains based on your fuel grade.
2. True Plug-and-Play Simplicity
Installs in under an hour with no cutting, flashing, or dealer involvement. It’s clean, easy, and fully reversible.
3. Bluetooth Control from Your Phone
Access and switch maps using our Bluetooth app, available on the Apple App Store and Google Play Store.
4. Built for the Future of Performance
Designed to integrate with future CarBahn upgrades like intake, cooling, and Stage 2 packages.
Start your upgrade with Stage 1
Tuned by a Racing Legend. Backed by Proven Pedigree.
This isn’t just another piggyback tuner. It’s the product of over 40 years of performance engineering by Steve Dinan, the mind behind multiple IMSA championships and two 24 Hours of Daytona wins.
Every controller is built on a foundation of real-world racing success, obsessive calibration, and a passion for BMW performance.
Meet Steve Dinan and the team behind CarBahn Racing Team
Responsible Tuning Without Compromise
Removing emissions components might gain you a couple percent in power—but it’s not worth the legal and environmental cost. Our testing shows removing the catalyst nets only around 2% more power. That’s why we engineer solutions that deliver real gains while maintaining emissions compliance.
With the CarBahn Stage 1 Controller, you don’t have to choose between power and responsibility.
Make the smart, legal choice in performance
Frequently Asked Questions
Is the Stage 1 Controller safe for daily driving?
Yes. It’s smooth in traffic and powerful under throttle—ideal for real-world use.
Does it void my warranty?
We offer an optional CarBahn Powertrain Warranty to give you full peace of mind.
What fuel does it support?
Selectable maps are available for 91, 93, and 100 octane via the Bluetooth app.
Do I need to visit a tuner?
No dyno or flash is required. It’s true plug-and-play.
Is it reversible?
Yes. Unplug it anytime—no trace, no problem.
Still have questions? Contact us here
The Final Word: Don’t Just Drive the Future—Command It.
The BMW G90 and G99 M5 are already engineering masterpieces. But even the best cars leave something in reserve. The CarBahn Stage 1 Performance Controller unleashes that hidden power with unmatched precision, safety, and simplicity.
Don’t settle for fast. Become unforgettable.