Description
Upgrade the performance of your BMW F8X M2, M3, or M4 with CarBahn Performance 561 HP Stage 1 ECU Software. Designed for S55-powered BMW M models, this ECU calibration is compatible with both manual and automatic transmissions and is engineered specifically for rear-wheel-drive applications.
The Stage 1 software delivers up to 561 HP and 569 lb-ft of torque based on calculated flywheel power, with measured wheel output reaching 494 WHP and 501 WTQ. Performance results vary by the original vehicle configuration, with separate stock and tuned figures provided for Base, Competition, and CS models.
The calibration is designed to provide increased power while maintaining the characteristics of the S55 engine platform. The factory top-speed governor is removed.
Performance Specifications
Base Model
Calculated Flywheel Power
- OEM Stock: 414 HP / 460 lb-ft TQ
- Tuned: 561 HP / 569 lb-ft TQ
Measured Wheel Power
- OEM Stock: 364 WHP / 405 WTQ
- Tuned: 494 WHP / 501 WTQ
Competition Model
Calculated Flywheel Power
- OEM Stock: 476 HP / 477 lb-ft TQ
- Tuned: 561 HP / 569 lb-ft TQ
Measured Wheel Power
- OEM Stock: 419 WHP / 420 WTQ
- Tuned: 494 WHP / 501 WTQ
CS Model
Calculated Flywheel Power
- OEM Stock: 493 HP / 529 lb-ft TQ
- Tuned: 561 HP / 569 lb-ft TQ
Measured Wheel Power
- OEM Stock: 434 WHP / 465 WTQ
- Tuned: 494 WHP / 501 WTQ
Product Features
- Stage 1 ECU performance software
- Up to 561 HP calculated flywheel power
- Up to 569 lb-ft of calculated flywheel torque
- Up to 494 WHP measured wheel power
- Up to 501 WTQ measured wheel torque
- Designed for BMW S55 engines
- Manual and automatic transmission compatibility
- Rear-wheel-drive application
- Compatible with Base, Competition, and CS models
- Top-speed governor removed
- Dealer installation required
Detailed Fitment
Make: BMW
Model(s): M2 Competition, M2 CS, M3, M3 Competition, M3 CS, M4, M4 Competition, and M4 CS
Vehicle Year(s): 2015, 2016, 2017, 2018, 2019, 2020, and 2021
Transmission(s): Automatic and Manual
Chassis: F87, F80, F82, and F83
Body Style(s): Coupe, Sedan, and Convertible
Drivetrain(s): RWD
Fits Engines: S55
Installation Information
- Dealer Install Only.
- Top Speed Governor Removed.
Part Number: CBS55-0001
Installation: Dealer Install Only
Vendor: CarBahn
Type: Tuning & Software
