487 HP Stage 1 Performance Controller | BMW M240i/M340i/M440i
487 HP Stage 1 Performance Controller | BMW M240i/M340i/M440i
SKU: CBPRC-0017
In stock
What's the Factory Matching Warranty?
CarBahn's Factory-Matching Warranty provides coverage that mirrors your original manufacturer’s warranty, ensuring your vehicle remains protected even after performance upgrades, with up to 4 years or 50,000 miles, whichever comes first. If you have a problem with the powertrain, simply take your car to the dealership as usual, and we'll handle the details. Some restrictions apply. Click here for full terms.
Vehicle Fitment & Product Details
- Type: Tuning & Software
- Vendor: CarBahn
- Make: BMW
- Model(s): M240i, M340i, M440i, Z4 M40i, M240i xDrive, M340i xDrive, and M440i xDrive
- Vehicle Year(s): 2020, 2021, 2022, 2023, 2024, and 2025
- Chassis: G2X and G4X
- Body Style(s): Sedan, Coupe, and Convertible
- Drivetrain(s): xDrive and RWD
- Measured Flywheel Horsepower: 487
- Part Number: CBPRC-0017, CBB11-PC-0031
- Fits Engines: B58
- Installation: Self-Install
- Installation Time (hrs): 2
Performance Gains
| Octane Rating | Category | OEM Stock | Tuned |
|---|---|---|---|
| 93 Octane | Calculated Flywheel Power | 436HP / 449TQ | 471HP / 495TQ |
| Measured Wheel Power | 367WHP / 377WTQ | 396WHP / 416WTQ | |
| 100 Octane | Calculated Flywheel Power | 436HP / 449TQ | 487HP / 504TQ |
| Measured Wheel Power | 367WHP / 377WTQ | 409WHP / 423WTQ |
CarBahn Performance Controller (CPC):
The CarBahn Performance Controller (CPC) is a plug-and-play ECU that increases boost pressure in turbocharged vehicles, delivering significant horsepower and torque gains. The unit features selectable maps via a Bluetooth app, allowing you to optimize performance based on fuel octane levels. The app is available for download on both iOS and Android:
These maps support 91, 93, and 100 octane fuels, enabling additional performance enhancements. As with all CarBahn products, an optional powertrain warranty is available for purchase.
If you choose to upgrade to CarBahn Software in the future, you can trade in your CPC for a $250 upgrade credit. If you purchased the warranty, it will transfer to the software at no additional charge.
Emissions Legality
A note on downpipes (removing the catalyst): Our testing has shown that removing the catalytic converter results in only an 11HP gain, significantly less than many claim. Additionally, removing the catalyst makes it difficult to pass emissions tests and is illegal. We encourage keeping emissions systems intact to support cleaner air.
About Steve Dinan
Steve Dinan has over 40 years of experience in streetcar tuning. As an engine supplier, his expertise has contributed to three prototype racing championships and two overall wins at the 24 Hours of Daytona with Chip Ganassi Racing. No one knows more about tuning high-performance engines than Steve Dinan.
Warranty Information
CarBahn’s Factory-Matching Warranty mirrors the original manufacturer’s warranty, ensuring protection for up to 4 years or 50,000 miles. For claims, simply take your car to the dealership as normal, and we handle the claims process. Learn more.