The Diverse Applications of Motorsport ABS

In the world of motorsport, the importance of advanced braking systems cannot be overstated. Motorsport ABS is a technology that has revolutionised the consistency of braking systems. However, many mistakenly believe that the system is only applicable in limited, high-end motorsports. The projects undertaken at Racecar and Custom Electrical (RACE) contend this notion, highlighting the sheer diversity of ABS applications. We have experience working with everything from rally, circuit and race cars, right through to land speed racing bikes and cars. We have implemented the ABS system in numerous vehicles each with their own specifications and use cases. This article will explore the key reasons for implementing Bosch Motorsport ABS and showcase how we're making this advanced braking technology accessible for a wide spectrum of racing applications.

Why Standard ABS Falls Short in Modified Race Cars

Standard ABS systems often fall short in modified race cars. When production vehicles are stripped down to reduce weight and fitted with wider, stickier tyres and larger rotors, their braking potential improves significantly. However, changes in these parameters, alongside adjustments to suspension can alter the tyres’ contact patch, leading to mismatched software settings in the factory ABS units.
This mismatch often results in premature ABS intervention, relieving brake pressure unnecessarily and diminishing overall braking effectiveness. In extreme cases, drivers may experience a sudden drop in brake pressure despite maximum input. This can cost valuable time on the track, and at its worst, compromise control in such a way that a vehicle may leave the track. In such scenarios the advantages of a customisable ABS unit, becomes keenly obvious. 
Beyond the customisability, Motorsport ABS is also technologically more powerful when compared to most standard kits. Older cars from 1970s to the early 2000s, run on outdated two or three channel systems and even modern, four-channel systems lack the advancements in sensor accuracy, ECU processing power, and actuator speed found in Bosch Motorsport ABS.

Applications Across Iconic Vehicles

Bosch Motorsport ABS stands out as a versatile standalone unit, seamlessly integrating into a wide range of vehicles. The internal systems settings are easily adjustable, allowing for precise and diverse tuning. Operating independent of the factory ECU, it comes as a complete kit that includes its own wiring harness, G-sensor, and wheel speed sensors. At RACE, we have harnessed this versatility to collaborate with talented drivers, such as Gary Bigwood, the 2024 Targa New Zealand Category 5 class winner.

Gary's BMW E36 M3, a formidable tarmac rally machine, now benefits from the predictable and tunable braking that the Bosch system provides, overcoming all the limitations that the factory ABS previously posed. With a convenient 12-position switch, Gary can easily adjust the degree of ABS intervention on the fly, allowing for quick modifications based on changing road conditions, tyre wear, and weather. The output from the ABS sensors are also used for traction and launch control, and this data is logged to drive future optimisations. Our team has also integrated the Bosch Motorsport ABS system into a Toyota GR Yaris AP4, which competes in both tarmac and gravel rally. This adaptability allows the ABS to deliver optimal performance on tarmac stages while providing the option to disable it for gravel stages, so drivers can use traditional rally braking techniques when desired. In both setups, wheel speeds are transmitted via CAN Bus, which simplifies wiring by allowing the ABS to transmit data directly to the ECU. Additionally, the acceleration and yaw sensor readings, switch position and ABS status are also broadcast over the CAN Bus. In both vehicles, this advanced integration not only improves performance but also enhances driver confidence, allowing for a more responsive and controlled driving experience in addition to comprehensive diagnostics.

When combined with the Bosch Motorsport DDU 11 Display, the system gains another level of functionality, allowing users to run similar diagnostics to the RaceABS software, but without the need for a computer and MSA-BOX. It essentially streamlines the diagnostic process, allowing users to access error memory, sensor data and the repair bleed wizard directly from the screen.

In addition to rally applications, we have outfitted a former SuperTourer circuit racing car with the Motorsport ABS kit. These cars emerged from the original V8SuperTourers Championship, and have since been transformed into endurance and GT cars, now competing in the GTR NZ series and the GT Championship series in New Zealand. No longer under the constraints of SuperTourer regulations, many of these vehicles have been repurposed and upgraded with enhancements including Bosch Motorsport ABS. For these high-powered machines, the ABS serves as a crucial safety net, empowering drivers to confidently push their braking limits each lap. On the track, the system drastically reduces the risk of flat-spotting tyres—an issue that can compromise handling and necessitate costly tyre changes. By preventing lock-ups and optimising braking force, drivers can maintain consistent performance and focus on gaining crucial tenths of a second, lap after lap.

The reliability of the ABS kit shines even in the demanding world of endurance racing. We installed the system in a SsangYong Actyon Ute, specifically prepared for the NaZCAR 24 Hours of Lemons endurance racing, where it has achieved significant success, often finishing on the podium. This ute has undergone substantial modifications, including engine changes, turbo additions, and upgraded braking systems. In this challenging environment, where reliability and driver confidence are paramount, ABS minimises the risk of lock-ups and potential damage, allowing drivers to focus on consistency and endurance rather than constantly managing their braking.

The technology isn't limited to cutting-edge race cars; it is also revitalising classic vehicles like the Ford Cortina MK1 GT. This particular car has been primarily used for track days but has aspirations for participation in the Targa NZ series. Working with our team, this customer was able to integrate modern braking technology into an older car, resulting in a more predictable, responsive, and confidence-inspiring driving experience that still preserves the charm of the classic design. With this added reliability, the vehicle gains a competitive advantage that will elevate its performance in series like Targa.

Whether you're competing in tarmac rally, endurance racing, or circuit racing, Bosch Motorsport ABS offers a versatile and effective solution for enhancing braking performance and reliability. From classic cars to modern race machines, the system's adaptability makes it an invaluable asset for any serious competitor. If you’re interested in transforming your driving experience, contact us today to discover how we can tailor Bosch Motorsport ABS to meet your specific needs and help you conquer the track!