815 HP Stage 1 ECU Software | BMW F9X M8 (2021+)
Ships in 3–7 business days · tracked shipping across the USA
Not sure it fits? for a fast answer, or text / call (619) 706-9046.
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Stock
Stock W HP & TQ: 587 Wheel HP & 578 lb-ft Wheel torque
Stock FW HP & TQ: 716 Flywheel HP & 689 lb-ft Flywheel torque
Tuned- 93 Octane
Tuned W HP & TQ: 642 Wheel HP & 618 lb-ft Wheel torque
Tuned FW HP & TQ: 783 Flywheel HP & 754 lb-ft Flywheel torque
Delta W HP & TQ: 55 Wheel HP & 53 lb-ft Wheel torque
Delta FW HP & TQ: 67 HP Flywheel HP & 65 lb-ft Flywheel torque
Tuned- 100 Octane
Tuned W HP & TQ: 669 Wheel HP & 618 lb-ft Wheel torque
Tuned FW HP & TQ: 815 Flywheel HP & 754 lb-ft Flywheel torque
Delta W HP & TQ: 81 Wheel HP & 54 lb-ft Wheel torque
Delta FW HP & TQ: 99 Flywheel HP & 65 lb-ft Flywheel torque
- *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.
| Vehicle | BMW |
|---|---|
| Model years | 2021+ |
Trim, options or aftermarket parts can change fitment. with your year, model and trim (or VIN) and we'll confirm before you order, or text / call (619) 706-9046.
Shipping
- Processing time varies by part — current availability is shown above the Add to cart button.
- Shipping cost is calculated at checkout by size, weight and destination.
- Tracking is emailed when your order ships. Route package protection is available at checkout.
Returns
- Request a return within 30 days of delivery by emailing hello@royalperformanceusa.com — an approval / RMA is required before sending anything back.
- Items must be unopened, unused and uninstalled, in original packaging. A 20% restocking fee applies and return shipping is paid by the customer.
- Installed, altered, painted, custom, special-order and pre-order items can't be returned.
- Report shipping damage within 72 hours with photos of the box, label and part.
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