447 HP Stage 1 ECU Software | BMW X3 M40i / X4 M40i
Digital Download
- Top-Speed Governor Removed
Intelligent Octane Adaptations
Choose your installation method
Option 1: Authorized CarBahn Dealer Installation
This software can be installed at an authorized CarBahn dealer. If a DME unlock is required, many vehicles can also be bench unlocked directly by the dealer before the software is installed.
Option 2: Install via Bootmod3 or MHD
Install yourself using Bootmod3 or MHD. Call 866-558-4314 ext. 1 to purchase or learn more. Note: Tunes installed via this method are not eligible for the CarBahn Factory Matching Warranty Program.
DME Unlock Required
This vehicle requires a DME unlock prior to flashing. Depending on the vehicle, the DME can either be bench unlocked at an authorized CarBahn dealer or unlocked through FEMTO. Contact your authorized CarBahn dealer or call 866-558-4314 ext. 1 to confirm the correct unlock method for your vehicle.
Need help deciding which option fits your vehicle? Call 866-558-4314 ext. 1 and our team will point you to the right path.
SKU: CBB58-0501
Vehicle Fitment & Product Details
- Type: Tuning & Software
- Vendor: CarBahn
- Make: BMW
- Model(s): X3 M40i and X4 M40i
- Vehicle Year(s): 2021, 2022, 2023, 2024, and 2025
- Transmission(s): Automatic
- Chassis: G01 and G02
- Body Style(s): SAV
- Drivetrain(s): xDrive
- Part Number: CBB58-0501
Stock - 93 Octane
Stock Wheel HP & TQ: 328 WHP & 358 lb-ft WTQ
Stock Flywheel HP & TQ: 401 HP & 436 lb-ft TQ
Tuned - 93 Octane
Tuned Wheel HP & TQ: 367 WHP & 407 lb-ft WTQ
Tuned Flywheel HP & TQ: 447 HP & 496 lb-ft TQ
Delta Wheel HP & TQ: 38 WHP 49 lb-ft WTQ
Delta Flywheel HP & TQ: 46 HP & 60 lb-ft TQ
- *This can only be installed at an authorized CarBahn dealer!
- Top speed governor removed
- CarBahn EVO Intelligent software adapts to various fuel octane levels seamlessly, optimizing performance without compromising safety. It retains existing safety features and adds extra protection as needed