BOSCH M5 ABS Conversion Kit for C6

Bosch Motorsport ABS kit is a race-spec anti-lock braking system pulled from Bosch's competition line (the M4/M5 ECU family being the common ones you'll see in club and pro-level builds). 

What it is: A standalone ABS controller and hydraulic modulator designed for track and competition use — distinct from a stock road-car ABS unit because it's tunable, lightweight, and built to handle the higher brake pressures and faster wheel-speed changes seen in racing.

Key benefits

• Adjustable intervention — 9 pre set ABS maps/levels so a driver (or team) can dial in how aggressive the system intervenes, from near-off for experienced drivers to more assistance for less experienced ones. 2 slots for custom configurations as needed. 
• Wheel speed sensor integration — Works off dedicated wheel speed sensors (often paired with the car's existing sensors or new motorsport-spec ones) for precise slip detection. Requires Yellow pig tail GM ZR1 or C7 bearing with the active wheel speed sensor. 
• Weight-conscious — Significantly lighter than an OEM ABS module, which matters for a time attack or road racing build
• Configurable via software — requires Bosch's MSA communication box to set thresholds, wheel  and tire data, and specific chassis data.  This option is not mandatory, we configure every kit before we ship, but you are welcome to purchase the cable if you would like. 
• C6 Specific installation kit-  Our team put together a plug and play kit using years of installations and the help of our customers running this kit. 

Here's the Bosch Motorsport ABS M5 CAN channel list (from the AiM InfoTech integration doc for the "BOSCH – ABS M5 protocol):

Wheel speed channels

• M5 WH1 FR / M5 WH1 FL — Wheel speed sensor 1, Front Right/Left
• M5 WH1 RL / M5 WH1 RR — Wheel speed sensor 1, Rear Left/Right
• M5 WH2 FL / M5 WH2 FR — Wheel speed direct, Front Left/Right
• M5 WH2 RL / M5 WH2 RR — Wheel speed direct, Rear Left/Right

Dynamics / pressure channels

• M5 ACC X — Longitudinal acceleration
• M5 ACC Y — Lateral acceleration
• M5 YAW RATE — Yaw rate
• M5 YAW ACC D/s2 — Yaw acceleration (°/s²)
• M5 BRAKE PRESS F — Brake pressure, front
• M5 BRAKE PRESS R — Brake pressure, rear
• M5 BRK BAL AT50 — Calculated brake balance at 50 bar
• M5 BRK BAL AT50A — Recommended brake balance at 50 bar
• M5 BRK BAL PCT — Brake balance % on the front
• M5 BRK BAL PCTA — Recommended brake balance % on the front

Status / switch channels

• M5 SWITCH ST — ABS map switch position
• M5 BLS — Brake light switch
• M5 ABS ACTIVE — ABS control active (bit)

Fault / diagnostic channels

• M5 DIAG YRS — Yaw rate sensor fault bit
• M5 ABS FAULT INF — ABS fault bit
• M5 DIAG FL / FR / RL / RR — Wheel speed sensor fault bit (per corner)
• M5 ABS MALFUNCTI — ABS control deactivated bit
• M5 BREMSE 53 CNT — (counter channel)
• M5 DIAG ABS UNIT — ABS error on hydraulic unit
• M5 DIA FUSE VALV — ABS valves error on fuse/power supply
• M5 FUSE PUMP — ABS pump error on fuse/power supply
• M5 DIAG P FA — Front sensor fault bit
• M5 DIAG P RA — Rear sensor fault bit
• M5 EBD LAMP — EBD fault bit
• M5 ABS LAMP — ABS fault/off/race bit

This list is specific to AiM data logger integration (it's what an AiM  or Motec dash/logger will pull in over CAN when configured for the Bosch ABS M5 protocol)

NOTES: 

• Requires active hubs and large spline axles if you have a 1997-2008 car
• loss of cruise control, and OEM Active handling and traction control. 
• requires minor modification to OEM communications bus outlined in the install instructions
• requires 2009+ Bosch OEM Master cylinder and booster (These are ballistic, so must be purchased used  from Ebay or  dismantler. 
• can be used with C7 wheel bearing and sensor