The Bosch Motorsport MS25 SPORT is the only dedicated diesel engine control unit in the Bosch Motorsport range. It controls common-rail diesel engines with solenoid valve injectors on up to 8 cylinders, operates in both 12 V and 24 V vehicle electrical systems, and is rated to IPx6K and IPx9K — full resistance to high-pressure water jets and full submersion. These ratings, combined with engine-mountable installation with 8 fixing points and a liquid-cooled base plate, make it suitable for engine-bay mounting on diesel racing vehicles where thermal management and water ingress are primary concerns.
The MS25 SPORT manages two independent hydraulic bank configurations: a primary FMU (Fuel Metering Unit) and PCV (Pressure Control Valve), with an optional second FMU/PCV bank for V8 or dual-rail diesel systems. Eight solenoid injection output stages drive up to 8 injectors across three injection groups. A built-in lambda interface accepts one Bosch LSU 4.9 wideband sensor, and 12 additional low-side power stages cover ancillary control: EGR valves, variable geometry turbo actuators, cooling solenoids, and exhaust aftertreatment components.
Calibration uses the MATLAB/Simulink-based development environment combined with Modas Sport and the MSA-Box II interface. Three separate CAN channels — labelled Dash, Application, and Customer — separate display data from ECU data from customer-defined data on dedicated buses. J1939 protocol support is optional, enabling compatibility with standard heavy-vehicle diagnostic and telemetry infrastructure in diesel truck racing.
Technical Specifications
| Property | Value |
|---|---|
| SKU | F02U.V0U.800-02 |
| Engine type | Common-rail diesel, solenoid injectors |
| Max cylinders | 8 |
| Supply voltage | 12 V or 24 V |
| Injection outputs | 8 × power stages (solenoid), 3 injection groups |
| HP pump control | 2 × Fuel Metering Unit outputs (dual bank optional) |
| Pressure control valve | 2 × Rail PCV outputs (dual bank optional) |
| Low-side power stages | 12 × additional LS outputs |
| Lambda interface | 1 × Bosch LSU 4.9 |
| Total data inputs | 96 |
| Frequency inputs | 7 × general purpose |
| Wheel speed inputs | 4 × Hall-effect + 1 × vehicle speed |
| Turbo speed inputs | 2 × inductive |
| Crankshaft sensor | 1 × inductive |
| Internal sensors | 1 × atmospheric pressure, 1 × ECU temperature |
| CAN | 3 (Dash / Application / Customer); J1939 optional |
| LIN | Optional |
| SENT | Optional |
| Connectors | 2 × production-type, 192 pins (1.2 mm, separate coding) |
| Dimensions | 260 × 250 × 81 mm |
| Weight | 1,800 g |
| IP rating | IPx6K and IPx9K |
| Operating temperature | −40 to +85 °C |
| Cooling | Liquid-cooled base plate |
| Mounting | Engine-mountable, 8 fixing points with dampers |
| Calibration software | Modas Sport + MATLAB/Simulink |
| Interface | MSA-Box II |
What You Can Do With It
- Control common-rail diesel engines up to 8 cylinders with individual solenoid injector management
- Run in 12 V or 24 V vehicle electrical systems — diesel trucks, prototype diesel, and off-road without rewiring
- Mount the ECU directly on the engine with liquid cooling for reliable high-temperature operation
- Manage dual-bank high-pressure fuel systems for V8 diesel with two separate fuel rails
- Monitor 96 data inputs including 7 frequency channels, 4 wheel speed inputs, and 2 turbo speed inputs
- Separate ECU data, dash data, and customer data on three independent CAN buses
- Use J1939 protocol for compatibility with heavy-vehicle telemetry and diagnostics infrastructure
- Develop custom diesel control strategies in MATLAB/Simulink via the application framework
Accessories
- MSA-Box II — USB calibration interface for Modas Sport (kept in stock)
- WinDarab V7 — data analysis software (license key)
- Lambda Sensor LSU 4.9 — wideband diesel lambda sensor for direct ECU input
- C70 Data Logger — standalone data logger for additional channel acquisition
- DDU 9 Display — dash display logging unit via CAN
FAQ
What injection system does the MS25 SPORT support?
The MS25 SPORT is designed for common-rail diesel engines with solenoid valve injectors. It is not compatible with piezoelectric injectors, which require different drive electronics and timing strategies. If your engine uses piezoelectric injectors, contact XTRA Motorsport before ordering.
Can the MS25 SPORT control a diesel V8 with two fuel rails?
Yes. The optional dual-bank configuration activates two independent FMU (Fuel Metering Unit) and PCV (Pressure Control Valve) control channels, enabling independent rail pressure management for V8 or dual-rail diesel installations. This is ordered as an option at time of purchase.
What software is used to calibrate the MS25 SPORT?
Calibration uses Modas Sport connected via the MSA-Box II USB interface. Custom control functions can be developed using the MATLAB/Simulink-based development framework. The MS25 SPORT does not use RaceCon — it uses the older Modas Sport calibration environment.
What is the IP rating of the MS25 SPORT?
The MS25 SPORT is rated to IPx6K (high-pressure water jets) and IPx9K (high-pressure steam cleaning). This exceeds the IP67 rating of the MS 7.4 and MS 7.8 and is appropriate for engine-bay mounting in diesel truck racing where pressure washing is routine. The liquid-cooled base plate adds thermal protection for hot engine installations.
Does the MS25 SPORT support J1939 CAN protocol?
J1939 is available as an optional protocol for the CAN network. It enables the ECU to communicate with standard heavy-vehicle telemetry systems, diagnostic tools, and data acquisition units designed for diesel applications in truck and off-road racing where J1939 infrastructure is already in place.
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