824 HP Stage 2 Performance Controller | BMW XM

$995.00 USD

$995.00 USD ~~$1,195.00 USD~~

Shipping calculated at checkout.

Ships in 3–7 business days · tracked shipping across the USA

Not sure it fits? for a fast answer, or text / call (619) 706-9046.

Low stock! Only 2 left

✓ Verified fitment 🔒 Secure checkout 💬 Real support

Up to 17% off

STAGE 2 IS HERE FOR the XM!

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

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.

Vehicle fitment
Vehicle	BMW

Trim, options or aftermarket parts can change fitment. with your year, model and trim (or VIN) and we'll confirm before you order, or text / call (619) 706-9046.