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4.5 (123)

BMW G8X M3/M4 671 HP Stage 1 Performance Controller

Name: CarBahn BMW G8X M3/M4 671 HP Stage 1 Performance Controller - BMW G8X M3/M4 671 HP Stage 1 Performance Controller
Brand: CarBahn
SKU: 49357721370941
Price: 995.0 USD
Availability: InStock
Rating: 5 (1 reviews)

4.5 (1,234)

Sold 100+ last 30 days

20% off first order

$995.00

Quantity

Color

Black

Quantity

Description

Drivetrain Octane Calculated Flywheel Power Measured Wheel Power RWD 93 Octane OEM Stock: 591HP / 575TQ
Tuned: 653HP / 640TQ OEM Stock: 508HP / 494TQ
Tuned: 561HP / 550TQ 100 Octane Tuned: 671HP / 666TQ Tuned: 577HP / 573TQ xDri...

Reviews

5.0

1 rating

I installed the Controller on my BMW M4 Competition G83 with the S58 engine. The CarBahn Stage 1 Controller is an easy installation and yields tangible results. CarBahn Tech Support provided timely feedback. This is a superior value installation that optimizes performance within the OEM limits of turbo boost, refining Ignition Timing with my Dinan Coils, and fuel map optimization for 93 Octane. Thank you CarBahn.

BEN · January 29, 2026