The Top Finds
854 HP Stage 2 ECU Software Power Package | BMW F9X M8 (2021+)

CarBahn

854 HP Stage 2 ECU Software Power Package | BMW F9X M8 (2021+)

Reviewed by the The Top Finds editors · How we test

$3,210
Check price at CarBahn
How buying works: The Top Findsis an independent editorial site and doesn't sell this item. Clicking “Shop” takes you to CarBahn's own website, where you complete checkout — they handle pricing, inventory, shipping, and returns. Price last checked May 20, 2026; current price and stock are set by CarBahn at click time.

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new-arrival

Our review

Stock Stock W HP TQ: 587 Wheel HP 565 lb-ft Wheel torque Stock FW HP TQ: 716 Flywheel HP 689 lb-ft Flywheel torque Tuned- 93 Octane Tuned W HP TQ: 666 Wheel HP 635 lb-ft Wheel torque Tuned FW HP TQ: 813 Flywheel HP 775 lb-ft Flywheel torque Delta W HP TQ: 79 Wheel HP 71 lb-ft Wheel torque Delta FW HP TQ: 97 Flywheel HP 86 lb-ft Flywheel torque Tuned- 100 Octane Tuned W HP TQ: 700 Wheel HP 642 lb-ft Wheel torque Tuned FW HP TQ: 854 Flywheel HP 783 lb-ft Flywheel torque Delta W HP TQ: 113 Wheel HP 77 lb-ft Wheel torque Delta FW HP TQ: 138 Flywheel HP 94 lb-ft Flywheel torque *This can ONLY be installed at an Authorized CarBahn dealer!

Ready to buy

854 HP Stage 2 ECU Software Power Package | BMW F9X M8 (2021+)

Check price at CarBahn

The Top Finds is reader-supported. When you buy through links on our site, we may earn an affiliate commission. We never accept payment for placement, and prices and availability are set by the retailer at the time of click.