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824 HP Stage 2 Performance Controller | BMW XM

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Part Number: CBB11-PC-0012C
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$1,195.00
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Note: Vehicle must have the CarBahn Heat Exchanger (CBF9X-2021) for the XM installed to be eligible for the warranty and advertised power gains.

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Set up your controller the way that works for you.

Starting at $1,195.00
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): XM
  • Vehicle Year(s): 2023, 2024, 2025, and 2026
  • Transmission(s): Automatic
  • Chassis: G09
  • Body Style(s): SAV
  • Drivetrain(s): xDrive
  • Measured Flywheel Horsepower: 824
  • Part Number: CBB11-PC-0012
  • Fits Engines: S63
  • Installation: Self-Install
  • Installation Time (hrs): 2
  • Installation Instructions: Download
View full details
Product Description

STAGE 2 IS HERE FOR the XM!

Performance Gains

Horsepower

Stock: 685 HP
Tuned: 824 HP

Torque

Stock: 661 lb-ft
Tuned: 784 lb-ft

Measured at the San Jose, CA Dynamometer on 100 Octane

 

100 Octane Tuned

Calculated Flywheel Power:
Stock: 685 HP / 661 lb-ft
Tuned: 824 HP / 784 lb-ft
Gains: +139 HP / +123 lb-ft
Measured Wheel Power:
Stock: 562 HP / 542 lb-ft
Tuned: 676 HP / 643 lb-ft
Gains: +114 HP / +101 lb-ft

93 Octane Tuned

Calculated Flywheel Power:
Stock: 685 HP / 661 lb-ft
Tuned: 788 HP / 757 lb-ft
+103 HP / +96 lb-ft
Measured Wheel Power:
Stock: 562 HP / 542 lb-ft
Tuned: 646 HP / 621 lb-ft
+84 HP / +79 lb-ft

CarBahn Stage 2 Performance Controller Power Package – BMW XM

The BMW XM ushers in a new era for M—pairing electrified punch with a twin-turbo V8 to deliver towering performance in a luxury SUV. But there’s still more on the table. The CarBahn Stage 2 Performance Controller is how you unleash it.

Developed by tuning legend Steve Dinan, this plug-and-play module delivers a serious jump in power and response—without flashing the factory ECU or compromising long-term reliability. Run the map that matches your fuel and driving needs; on higher-octane fuel the XM responds with head-snapping acceleration and relentless mid-range pull, with corresponding gains at the wheels.

Whether you’re charging up an on-ramp, passing at altitude, or carving a back road, Stage 2 reveals the performance BMW engineered but left in reserve.

Highlights:

  • Big Gains on 93 & 100 Octane (see dyno section for details)
  • Plug-and-Play Simplicity: Installs quickly, fully reversible, no ECU flash required
  • Daily-Driver Friendly: Smooth and refined in traffic; ferocious when you ask for it
  • Future-Proof Engineering: Designed to play nicely with upcoming CarBahn upgrades
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.