CS Performance Tuning Package - BMW G8X M3/M4

Aimed at BMW G80/G82 owners, the BMW CS Software flash upgrades the your M3/M4 to the CS software tune, with the following highlights:

Package Includes

• CS Engine Flash (530hp/650Nm)
• CS Transmission Flash (ATX only)
• CS Suspension Flash
• CS Differential Coding
• CS Steering Coding
• Anti Dazzle Lighting
• ASD (CS ASD or completely disable ASD)

Engine Performance
Acceleration picks up strongly from around 1700 RPM, and the car feels much more alive. It responds quickly, accelerates smoothly, and the overall driving experience becomes far more agile and engaging. There’s a distinctly stronger engine note on startup, with a deeper idle and more aggressive exhaust character. Pops and bangs when lifting off the throttle are much louder and more frequent, and acceleration sounds more intense overall

ATX Transmission
Upshifts are lightning-fast and almost immediate. Downshifting is quicker, and while not aggressive, the gear changes come with a satisfying, subtle kick that enhances the sporty feel

Steering
Steering becomes tighter, a bit weightier, and more confidence-inspiring. No longer the need to constantly make micro-adjustments - there’s a newfound stability and precision that really improves the overall driving experience

Suspension
The chassis becomes much more planted. On smooth roads, the car feels glued to the asphalt, delivering additional confidence in turns. While the vehicle is rock-solid in terms of handling - definitely not for casual-focused drives.

DSC/Differential (MDM)
Paired with some sticky tires, grip is outstanding. It’s virtually impossible to induce tire slip during normal driving

CS Performance DME Features

• No need to unlock ECU – Plug-and-play flash; no opening or removal of DME
  OEM CS software flash
• Not aftermarket tuning, but genuine BMW software from the CS model
• M3/M4 xDrive CS Power bump – From ~453 hp to 530 hp, and torque from ~550 Nm to 650 Nm
  
• Idle slightly increased from 600rpm to 900rpm
  
• Top speed limiter removed – Now limited only by gearing/aero (~186 mph or 300 km/h)
• Dealer-safe – No tuning flags triggered (e.g., BMW’s tamper detection won't record as modification)

For xDrive Equipped vehicles only. While this may not trigger flags, BMW can still deny warranty claims if they determine the car is running different software, especially if a fault is software-related.

Note: Vehicle coding is performed in our facility in Anaheim, CA. Not available for home or remote-based flashing.

Vehicles Supported
BMW G8X M3/M4, including Competition