Home » 959 HP Stage 2 Performance Controller | BMW G90 & G99 M5
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959 HP Stage 2 Performance Controller | BMW G90 & G99 M5

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Part Number: CBB11-PC-0062C
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$1,395.00
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Note: Vehicle must have the CarBahn Heat Exchanger (CBB08-90-2052) for the G90/G99 installed to be eligible for the warranty and advertised power gains.

Choose your installation method

Set up your controller the way that works for you.

Starting at $1,395.00
Dealer installation labor is not included in this total.
ESTIMATED INSTALLATION TIME
1.5 hours

Typical labor time for this product.

INSTALLATION RESOURCES
Installation Guide
Need professional installation?

Find an authorized CarBahn dealer to arrange installation and request a labor quote.

Find an Authorized Dealer
Questions before you order? Our performance specialists can help.
(866) 558-4314

Performance Controller FAQs

Answers to common questions about installation, upgrades, tuning and warranty coverage.

Do I need an ECU unlock for a Performance Controller?

No. CarBahn Performance Controllers are plug-and-play devices that work with your vehicle's factory ECU without requiring an ECU unlock or software flash. You can install the controller at home or through a professional installer.

Why is a heat exchanger required for Stage 2?

Stage 2 produces additional power and heat, placing greater demands on the charge-air cooling system. The CarBahn Heat Exchanger provides increased cooling capacity to help control intake temperatures and maintain consistent performance.

The required CarBahn Heat Exchanger must be installed to achieve advertised Stage 2 performance and qualify for CarBahn's optional Factory Matching Warranty.

Can I upgrade to ECU reflash software later?

Yes. If you decide to move from a Performance Controller to CarBahn ECU Software, contact our tuning team to arrange the upgrade.

CarBahn offers a $250 controller trade-in credit toward eligible ECU Software purchases. Unlike the controller, ECU Software requires an ECU unlock and a compatible installation process. Your CarBahn dealer can help coordinate the conversion.

Does the warranty cover my powertrain if I install the controller myself?

CarBahn offers an optional Factory Matching Warranty for eligible vehicles and Performance Controller configurations. This provides separate coverage for qualifying powertrain repairs under CarBahn's warranty terms.

Self-installation does not automatically establish or exclude coverage. Your vehicle, installation, required supporting hardware and warranty purchase must satisfy the applicable terms and eligibility requirements.

We recommend confirming your eligibility with our team before installation, particularly if you plan to install the controller yourself.

How do I pair my Performance Controller with the app?

Download the Tuning Pro app and locate the 13-digit serial number on your controller or product cover sheet. Turn on your vehicle's ignition without starting the engine, enable Bluetooth, and disconnect other Bluetooth devices during initial pairing.

Open the app, enter the 13-digit serial number, and use the final six digits as the Bluetooth PIN when prompted. Once connected, select the map appropriate for the fuel in your tank.

View the complete pairing guide

What fuel octane levels are supported?

CarBahn Performance Controllers support selectable calibrations for 91, 93 and 100 octane fuel. Choose the appropriate map through the Tuning Pro app based on the fuel currently in your tank.

Higher-octane maps must only be used with the corresponding fuel. Available power output varies by vehicle and selected calibration.

Can I upgrade from Stage 1 to Stage 2 remotely, or do I need a new controller?

You don't need to purchase an entirely new controller. CarBahn supports remote upgrades from Stage 1 to Stage 2 on eligible Performance Controllers, so the existing unit can be updated without removal.

Stage 2 supporting hardware, including the required CarBahn Heat Exchanger, must be installed before operating the upgraded calibration. Contact our tuning team to confirm your configuration and arrange the upgrade.

Vehicle Fitment & Product Details

  • Type: Tuning & Software
  • Vendor: CarBahn
  • Make: BMW
  • Model(s): M5
  • Vehicle Year(s): 2025 and 2026
  • Transmission(s): Automatic
  • Chassis: G90 and G99
  • Body Style(s): Sedan and Touring
  • Drivetrain(s): xDrive
  • Measured Flywheel Horsepower: 959
  • Part Number: CBB11-PC-0061
  • Fits Engines: S68
  • Installation: Self-Install
  • Installation Time (hrs): 1
  • Installation Instructions: Download
View full details
Product Description

STAGE 2 IS HERE FOR the G90 M5

Performance Gains

Horsepower

Stock: 778 HP
Tuned: 959 HP*

Torque

Stock: 834 TQ
Tuned: 1,013 TQ*

*Calculated Flywheel Power with 100 octane measured at the CarBahn San Jose Dynamometer

100 Octane Tuned

100 Octane Dyno
Calculated Flywheel Power:
959 HP / 1,013 lb-ft
+181 HP / +179 lb-ft
Measured Wheel Power:
787 HP / 831 lb-ft
+149 HP / +150 lb-ft

93 Octane Tuned

93 Octane Dyno
Calculated Flywheel Power:
909 HP / 963 lb-ft
+131 HP / +129 lb-ft
Measured Wheel Power:
746 HP / 790 lb-ft
+108 HP / +106 lb-ft


CarBahn Stage 2 Performance Controller – BMW G90 & G99 M5

The G9X M5 marks a bold new chapter in BMW M performance—fusing electrified torque with brute V8 power in a way no M car has before. But even with all that innovation, there’s more lurking beneath the surface. The CarBahn Stage 2 Performance Controller is your key to unlocking it.

Meticulously engineered by the CarBahn Team, this plug-and-play module delivers an astonishing increase in performance—without altering your factory ECU or compromising long-term reliability. On 100 octane fuel, we’ve measured a blistering 959 flywheel horsepower and 1,013 lb-ft of torque, transforming the already formidable M5 into a supercar-slaying monster.

Whether you're chasing tenths at the track or simply demanding more from every on-ramp, the Stage 2 Controller brings out the car BMW engineered but left in reserve.

Highlights:

  • Up to 959 Flywheel HP / 1,013 lb-ft (on 100 octane)
  • Plug-and-Play Simplicity: Installs in under an hour, fully reversible, no ECU flash required
  • Daily Driver Friendly: Smooth at low speeds, savage under throttle
  • Future-Proof Engineering: Compatible with upcoming CarBahn upgrades

With demand for the G90 M5 surging and its place in M history already sealed, this controller ensures yours won’t just be another fast car—it’ll be the car that everyone remembers.

CarBahn App

Control Your Tune Anytime, Anywhere

With the App, adjusting your octane map is as easy as tapping your screen. Whether you’re running 91, 93, or 100 octane, you can instantly switch performance profiles to match your fuel—no tools, no laptop, no hassle.

Once paired to your controller’s serial number, the app remembers your settings so you can set it and forget it—until you decide to change fuel grades. Just open the app, tap your desired map, and enjoy optimized performance in seconds.

✅ Fast Bluetooth pairing
✅ VIN-locked security
✅ Supports 91 / 93 / 100 octane switching
✅ Available for iOS and Android
✅ App updates add new features and compatibility

 

About our Controllers
The CarBahn Performance Controller (CPC) is an easy-to-install Controller that significantly boosts the turbocharged cars' horsepower and torque. This plug-and-play unit offers selectable maps, which can be accessed through a smartphone application via Bluetooth. To access this app, you must download them from either the Apple App Store or the Google Play Store.

The maps are specifically designed to optimize performance based on different octane fuel levels. You have the flexibility to choose between 91, 93, and 100 octane options.

Additionally, CarBahn offers an optional powertrain warranty for all their products, including the CPC.

Emissions Legality:
Let us address the topic of removing the catalyst, commonly achieved through the utilization of downpipes. Our rigorous testing regimen involved conducting consecutive dyno runs with and without the catalyst, and the observed power gain was significantly smaller than commonly touted, typically around 2%. Nevertheless, it is important to acknowledge our shared responsibility towards environmental preservation, as clean air is vital to our well-being. Furthermore, obtaining the necessary emissions certifications without a catalyst is a daunting task and, from a legal standpoint, it is considered an infringement.

About Steve Dinan:
With an illustrious career spanning over four decades, Steve Dinan stands as an authority in streetcar turbo tuning. Under his leadership, our team has triumphed in three prototype racing championships and secured two overall victories at the esteemed 24 Hours of Daytona in collaboration with Chip Ganassi Racing. Steve Dinan's unparalleled expertise solidifies our claim as the leading force in tuning high-performance engines.