BMW F9X M5, M5C, M8, M8C Carbahn Performance Controller & Software Stage 2

Unlock a higher level of performance from your BMW F9X M5, M5 Competition, M8, or M8 Competition with the Carbahn Stage 2 Performance Controller and Software. Designed for compatible automatic transmission-equipped models, this upgrade increases output, improves boost response, and delivers a more aggressive driving experience.

This Stage 2 package is engineered to bring out more power from the F9X platform while retaining a structured performance calibration. The upgrade includes Stage 2 software, a matching warranty option, support for Competition models, and removal of the factory top speed governor.

Power gains vary depending on fuel octane. On 93 octane, output increases to a calculated 813 HP and 775 TQ at the flywheel, with measured wheel output of 666 WHP and 635 WTQ. On 100 octane, output increases further to a calculated 854 HP and 783 TQ, with measured wheel output of 700 WHP and 642 WTQ.

Product Specifications

Key Features

• Stage 2 Carbahn performance software for compatible BMW F9X M models
• Designed for BMW M5, M5 Competition, M8, and M8 Competition applications
• Includes support for Competition models
• Improves boost and overall power output for a more aggressive driving experience
• Top speed governor removed
• Matching warranty option included in the package
• Supports 93 octane and 100 octane performance levels
• Compatible with automatic transmission-equipped vehicles only

Configuration Options

• 93 Octane calibration: calculated 813 HP / 775 TQ at the flywheel; measured 666 WHP / 635 WTQ
• 100 Octane calibration: calculated 854 HP / 783 TQ at the flywheel; measured 700 WHP / 642 WTQ
• 91 Octane usage produces approximately 7-8 HP less than the 93 Octane figures

Package Includes

• Stage 2 software
• Carbahn Performance Controller
• Matching warranty option
• Competition model compatibility
• Top speed governor removal

Note: This product is only compatible with automatic transmission-equipped vehicles. Power figures vary depending on fuel octane, vehicle condition, supporting modifications, and testing conditions.

Installation

• Performance controller and software installation required
• Vehicle should be inspected for proper mechanical condition before tuning
• Use the correct fuel octane for the selected calibration
• Professional installation and calibration support are recommended
• Confirm transmission compatibility before purchase

Fitment

• 2021 BMW M8 Base Gran Coupe
• 2021-2023 BMW M5 Base Sedan
• 2021-2023 BMW M5 Competition Sedan
• 2021-2023 BMW M8 Competition Gran Coupe
• 2022 BMW M8 Competition Coupe
• 2022-2023 BMW M8 Competition Convertible

United States: Free shipping available to the lower 48 states across all items. Other states will incur a shipping charge.

Worldwide: Free shipping is available for Complete Headlights, Taillights, DRLs. For custom headlight retrofits, carbon fiber products, and performance products, there will be a shipping charge.  

Please note:
• For Retrofits, you are purchasing a headlight modification service.
• If you select "Shipping own headlights to BayOptiks for modification", you are required to send us your headlights.
• If you choose "Purchase new OEM headlights", we will order and modify a new OEM headlight for you.
• Once your customizations are complete, we will ship it to you!

• Complete Headlights: 3-5 business days for order processing plus shipping time.
• Custom & Pre-Built Headlights: 6-8 weeks depending on the complexity and component availability.
• New OEM and cores: 6-8 weeks plus an additional 4-8 weeks as these are special orders base on the vehicle VIN due to different versions (North American, European, etc.)
• DRLs, Taillights, Brake Pads, and Carbon Fiber Aero: 3-5 business days for order processing, plus shipping time.
• Lens Replacements: 1-3 weeks plus shipping time.

Please note, we do not have control over the time frames of our vendors, manufacturers, and delivery services as they may delay processes in regards to components and shipment.