Stage 1 Power Package | BMW M3/M4 G8X
Stage 1 Power Package includes:
- CarBahn Stage 2 Performance Controller
- CarBahn Heat Exchanger
- CarBahn High Flow Air Filters
Vehicle Fitment & Product Details
- Type Tuning & Software
- Make BMW
- Model(s) M3, M3 Competition, M3 Competition xDrive, M3 CS, M4, M4 Competition, and M4 Competition xDrive
- Vehicle Year(s) 2021, 2022, 2023, 2024, and 2025
- Transmission(s) Automatic
- Chassis G80, G82, and G83
- Body Style(s) Coupe, Sedan, and Convertible
- Drivetrain(s) xDrive and RWD
- Horsepower 704
- Part Number CBG8X-9003
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Comp RWD
| Calculated Flywheel Power | Measured Wheel Power | |
|---|---|---|
| Stock vs 93 Octane | OEM Stock: 591 HP / 575 lb-ft TQ Tuned: 679 HP / 654 lb-ft TQ |
OEM Stock: 508 WHP / 494 lb-ft WTQ Tuned: 584 WHP / 562 lb-ft WTQ |
| Tuned - 100 Octane | Tuned: 704 HP / 683 lb-ft TQ | Tuned: 605 WHP / 587 lb-ft WTQ |
Comp xDrive
| Calculated Flywheel Power | Measured Wheel Power | |
|---|---|---|
| Stock vs 93 Octane | OEM Stock: 591 HP / 575 lb-ft TQ Tuned: 679 HP / 654 lb-ft TQ |
OEM Stock: 484 WHP / 471 lb-ft WTQ Tuned: 557 WHP / 536 lb-ft WTQ |
| Tuned - 100 Octane | Tuned: 704 HP / 683 lb-ft TQ | Tuned: 577 WHP / 560 lb-ft WTQ |
Unleash the full potential of your BMW M3/M4 with CarBahn's Stage 1 Power Package, engineered by legendary BMW tuner Steve Dinan. Designed for enthusiasts who crave more performance without compromising reliability, this power package optimizes your vehicle’s performance with precision tuning.
Featuring a custom ECU calibration, this Stage 1 upgrade maximizes horsepower and torque gains across the powerband, providing a smoother, more exhilarating driving experience. Whether you're on the track or the street, expect a noticeable increase in throttle response, acceleration, and overall driving dynamics. Compatible with both stock and lightly modified vehicles, this package transforms your BMW without the need for significant hardware changes.
What's Included:
- Stage 2 Plug-in ECU Performance Controller: Tailored tuning to maximize engine performance.
- CarBahn S58 High-Flow Replacement Air Filters: Improve airflow for enhanced power and efficiency.
- Upgraded Heat Exchanger Kit: Provides improved cooling for consistent power under high-performance conditions (required for stage 2 software).
- Comprehensive Installation Guide: Step-by-step instructions to assist with setup.
Key Features:
- Proven Horsepower Gains: Experience up to 100+ additional HP with premium tuning and performance optimization.
- Enhanced Throttle Response: Sharper, more immediate response for better driving control.
- Improved Cooling Efficiency: The upgraded heat exchanger ensures consistent performance, even during demanding driving.
- Track and Street Ready: Optimized for daily use while delivering track-level performance.
- Steve Dinan Engineered: Designed with decades of tuning expertise from one of the industry's most respected BMW engineers.
Unlock the hidden power of your BMW M3/M4 today with CarBahn's Stage 1 Power Package and elevate your driving experience to the next level.