Bosch Motorsport ECUs are the control units behind GT3 homologation programmes, LMH Le Mans Hypercar class, GTP prototype racing at Daytona, and factory diesel truck racing worldwide. XTRA Motorsport is an authorised Bosch Motorsport distributor supplying the full ECU range — MS 6 EVO, MS 7, MS25 Sport, and VCU MS 50.4 — to racing teams, OEM programmes, and private engineers across Europe.
The range spans three distinct hardware generations and four product families. The MS 6 EVO family covers port and direct injection gasoline engines up to 12 cylinders at 667 MHz (866 MHz on the MS 6.4P). The MS 7 family steps up to 1,000 MHz and IP67 sealing for GT3 homologation and prototype racing. The MS25 Sport is the only dedicated diesel ECU in the Bosch Motorsport range, rated to IPx9K with a liquid-cooled base plate. The VCU MS 50.4 is a separate vehicle control unit — not an engine ECU — running vehicle dynamics, transmission, and hybrid system algorithms on a dedicated dual-866 MHz-CPU platform alongside the engine ECU.
All Bosch Motorsport ECUs share the same calibration environment (RaceCon) and data analysis platform (WinDarab V7), with MATLAB/Simulink-based Customer Code Area support for custom algorithm development.
MS 6 EVO — Gasoline ECUs, Up to 12 Cylinders
The MS 6 EVO is Bosch Motorsport’s current-generation gasoline ECU for up to 12 cylinders at up to 12,500 rpm. Five variants cover the range from cost-effective GT4 and club racing through to OEM GT3 prototype-level specifications. All five share the same 226 × 181 × 44 mm chassis, IP54 sealing, 2 Bosch proprietary connectors (196 pins), and the standard RaceCon + WinDarab V7 software platform. Differentiators are injection type, analog input count, CPU speed, and memory upgrade capacity.
The MS 6.4 EVO is confirmed to be used in GT3 homologation programmes including the Audi R8 LMS GT3, Lamborghini Huracán GT3, and BMW M4 GT3 — making it the GT3-proven unit in the MS 6 EVO range.
Important: The MS 6.4P EVO requires a dedicated, separate software version in RaceCon — it is not compatible with MS 6.4 EVO software. Plan for a calibration migration if replacing a MS 6.4 with a 6.4P.
All MS 6 EVO variants include 4 GB of standard internal logging, upgradeable to 1,500 channels at 1,000 Hz via the FULL_LOG_1 software key. Dual ETC, variable valve timing, turbo control, traction control, launch control, and integrated gearshift management are supported across the range.
MS 7 — Professional GT3 and Prototype ECUs
The MS 7 family is Bosch Motorsport’s professional-grade engine control unit platform, used in GT3 homologation programmes, IMSA GTD, GT World Challenge Europe, LMH class at Le Mans, and GTP class at Daytona. Both MS 7 variants share a 198 × 180 × 42 mm IP67 chassis with four Souriau 8STA Autosport motorsport connectors (264 pins), separating them from the MS 6 EVO in mechanical specification as well as processing power.
The MS 7.8 adds eight fast cylinder pressure ADC inputs for in-cylinder combustion management — the hardware feature that enables per-cylinder knock detection from piezoelectric pressure transducers rather than block-mounted accelerometers. It is confirmed to be used in LMH class at the 24 Hours of Le Mans and GTP class at the Rolex 24 at Daytona. It also expands to five CAN channels (three CAN-FD capable) for the network demands of LMH hybrid architectures.
SERCOS3 real-time Ethernet on both MS 7 variants provides guaranteed 1 ms latency for data exchange with the VCU MS 50.4 and other Bosch Motorsport devices — not available on the MS 6 EVO platform.
MS25 SPORT — Diesel Racing ECU
The Bosch Motorsport MS25 SPORT is the only dedicated motorsport diesel ECU in the Bosch range, managing common-rail diesel engines with solenoid injectors up to 8 cylinders. It operates in 12 V or 24 V systems, is rated to IPx9K (pressure-wash and submersion), and mounts directly on the engine with a liquid-cooled base plate. Three independent CAN buses (Dash / Application / Customer) with optional J1939 support target diesel truck racing and diesel prototype applications.
VCU MS 50.4 — Vehicle Control Unit
The Bosch Motorsport VCU MS 50.4 is not an engine ECU — it runs vehicle-level algorithms alongside the MS 7 ECU: traction control, stability, active suspension, sequential gearbox logic, and hybrid energy management. Its dual 866 MHz CPU architecture dedicates one processor entirely to the real-time control loop and a second entirely to logging, ensuring logging activity never affects control response. SERCOS3 Ethernet with 1 ms guaranteed latency connects it to the MS 7.4 or MS 7.8.
Calibration and Data Analysis Software
All Bosch Motorsport ECUs use RaceCon for calibration and configuration, with the MSA-Box II as the standard USB-to-ECU hardware interface (kept in stock). WinDarab V7 handles post-session data analysis — available as a free download (WinDarab V7 Free) or as a full Expert license with extended analysis functions. Custom vehicle control algorithms are developed using MATLAB/Simulink via the Customer Code Area (CCA) option available on all ECUs in this range.
FAQ
What is the difference between the Bosch Motorsport MS 6 EVO and MS 7?
The MS 6 EVO family uses a 667–866 MHz processor with IP54 sealing and two Bosch proprietary connectors. It covers GT4, touring car, and club racing applications. The MS 7 family uses a 1,000 MHz processor with IP67 sealing and four Souriau 8STA Autosport motorsport connectors — the same specification as GT3 homologation programmes and prototype racing. The MS 7 also adds SERCOS3 real-time Ethernet, integrated HP injection power stages, and (on the MS 7.8) cylinder pressure ADC inputs.
What racing series use Bosch Motorsport ECUs?
The MS 6.4 EVO is confirmed in GT3 homologation programmes including the Audi R8 LMS GT3, Lamborghini Huracán GT3, and BMW M4 GT3. The MS 7.4 is confirmed in the Ferrari 296 GT3. The MS 7.8 runs in LMH class at the 24 Hours of Le Mans and GTP class at the Rolex 24 at Daytona. The MS 6 EVO range is widely used in GT4, VLN, TCR, and national circuit championships across Europe and globally.
Which MS 6 EVO variant supports direct injection (GDI)?
The MS 6.3 EVO, MS 6.4 EVO, and MS 6.4P EVO all support combined low-pressure and high-pressure (GDI) injection via the optional HP package. The MS 6.1 EVO and MS 6.2 EVO are port fuel injection only. For GDI applications requiring an external high-voltage injector driver, the Bosch Motorsport HPI5 injection power stage is the standard companion unit.
What is the MS 6.4P EVO and why is it different from the MS 6.4 EVO?
The MS 6.4P EVO uses an 866 MHz CPU versus 667 MHz on the MS 6.4 — approximately 30% more processing headroom for Customer Code Area algorithms. It also supports a 16 GB optional memory upgrade versus 4 GB on the MS 6.4. Critically, the MS 6.4P requires a dedicated, separate software version in RaceCon — it is not compatible with MS 6.4 EVO software, and project files cannot be directly transferred.
What interface is needed to calibrate a Bosch Motorsport ECU?
All Bosch Motorsport ECUs are calibrated using RaceCon software. The MSA-Box II is the standard USB-to-ECU hardware interface and is kept in stock at XTRA Motorsport. Direct Ethernet connection is also supported on all units. Data analysis uses WinDarab V7.
Does XTRA Motorsport ship Bosch Motorsport ECUs across Europe?
Yes. XTRA Motorsport is an authorised Bosch Motorsport distributor, shipping to all EU countries via DHL/UPS and beyond. Most ECUs are special order items with typical lead times of 7 days to 2–3 weeks. Contact us at andrius@xtra.lt for current availability and pricing on specific models.
What is the VCU MS 50.4 and when do I need it alongside an ECU?
The VCU MS 50.4 is a separate vehicle control unit that runs vehicle-level algorithms — traction control, stability, active suspension, gearbox logic, hybrid management — on a dedicated 866 MHz dual-CPU platform completely separate from the engine ECU. It is used in GT3, GT endurance, and hybrid prototype programmes where the engine ECU’s processing capacity is needed entirely for engine management, and vehicle-level functions require their own deterministic control loop and data logging.
Can I use a Bosch Motorsport ECU with WinDarab V7 Free?
WinDarab V7 Free is available as a free download from Bosch Motorsport and provides full playback, channel display, and lap comparison functionality. The paid Expert edition adds histogram analysis, extended mathematical functions, external data linking, and the COM API for scripted data processing. Both editions are fully compatible with all ECUs, loggers, and DDU display units in this range.
