MP48 ECU Kits for 4-Cylinder CNG/LPG Sequential Injection
MP48 is a gas injection controller for compatible petrol-engine conversion systems. It supports CNG or LPG applications with matched injectors, sensors, wiring and calibration. The listed cylinder options are three and four cylinders; confirm support in the supplied hardware and software version.
MP48 and MP48OBD must be specified separately. Do not assume that a standard MP48 kit includes OBD communication or OBD-based correction. Identify the required version before requesting a quotation.
What Is the Difference Between MP48 and MP48OBD?
The OBD version adds functions that depend on vehicle communication compatibility. Confirm the supported protocol, accessible data and correction settings for the exact ECU version.
| Item | MP48 | MP48OBD |
|---|---|---|
| Gas Injection Control | Confirm supported engine and component configuration | Confirm supported engine and component configuration |
| Vehicle OBD Communication | Do not assume included | Confirm supported vehicle protocols |
| Fuel-Trim Data | Confirm available software functions | Confirm access to STFT and LTFT data |
| OBD-Based Correction | Do not assume included | Confirm availability, settings and operating limits |
| Fault-Code Functions | Request the supported diagnostic functions | Confirm reading and clearing functions separately |
Fuel-trim monitoring and fault-code clearing are different functions. STFT means short-term fuel trim. LTFT means long-term fuel trim. Neither function guarantees that conversion-related faults will be eliminated.
Calibration must match the ECU version and installed hardware. Read our injector rail and ECU calibration guide for related background information.
MP48 Technical Specifications
The following values come from the supplied MP48 product information. Confirm them against the technical sheet for the exact hardware revision before ordering.
| Fuel Application | CNG or LPG with matched components and calibration |
|---|---|
| Nominal Voltage | 12 V DC |
| Operating Voltage | 10–16 V DC |
| Cylinder Options | 3 or 4 cylinders; confirm supplied version |
| Listed Coil Resistance | ≥1 Ω; confirm which component this limit applies to and the approved injector models |
| Injector Emulation Resistance | 150 Ω; confirm circuit application and tolerance |
| Listed Ambient Temperature | −40°C to +125°C; confirm operating conditions and supporting test documentation |
| Listed Enclosure Protection | IP54; confirm enclosure and connector test scope |
| Connection | 48-pin connector; verify pin assignment and harness compatibility |
| Calibration | Compatible PC software and communication interface required |
A matching connector does not establish interchangeability. Check the wiring diagram, pin assignment, sensor characteristics and injector-driver compatibility before replacing an existing controller.
Which Functions Should Be Confirmed in the Software?
Operating strategies depend on the software version and configuration. Request the function list and setup instructions instead of assuming that every MP48 supports identical features.
MAP correction: Confirm the supported manifold absolute pressure sensor and available correction settings.
Petrol switch-back: Confirm the supported triggers, thresholds, delays and driver indication.
Starting strategy: Confirm normal starting fuel and any supported hot-start or emergency-start mode.
Petrol contribution: If supported, confirm whether petrol injection is retained under specified operating conditions and how it is configured.
Diagnostics: Request the supported gas-system faults, live data and software logging functions.
Automatic switch-back should not be described as a response to every possible fault. Ask for the documented conditions and commissioning checks for the selected version.
Will MP48 Match Your Vehicle?
Engine and electrical compatibility must be reviewed before installation. Passenger cars, taxis and light-duty vehicles may use different injection signals, wiring and component configurations.
Vehicle make, model, year and engine code
Three-cylinder or four-cylinder engine
Original petrol injection type
Required fuel: CNG or LPG
Gas injector model and electrical characteristics
Pressure, temperature and MAP sensor models
Required OBD functions and available vehicle protocol
Direct-injection compatibility must be confirmed separately. Do not assume that a standard sequential gas ECU supports GDI or TGDI engines. See our direct-injection conversion guide before selecting a controller.
What Does the MP48 ECU Kit Include?
The itemized quotation defines the supplied accessories. Confirm the ECU version and each accessory model. Product photographs do not guarantee that every pictured item is included.
MP48 or MP48OBD controller
Compatible wiring harness
Changeover switch
MAP and other required sensors
Calibration software and access conditions
Communication cable or interface, if included
Wiring diagram and installation documentation
A gas ECU kit is not automatically a complete vehicle conversion kit. Confirm reducer, injectors, cylinders, valves and installation hardware separately. Review our conversion kit component guide when comparing offers.
How Should Protection and Temperature Ratings Be Verified?
IP54 is an enclosure protection classification, not a general waterproof guarantee. Request the applicable IEC 60529 report and confirm whether the tested assembly includes connectors and seals. Follow the specified mounting instructions.
The listed temperature range needs defined test conditions. Ask whether −40°C to +125°C refers to powered operation, storage or another test condition. Request the test duration, operating state and acceptance criteria.
Electrical testing: Supply-voltage conditions and input/output functional results.
Communication testing: ECU version, supported protocols and tested functions.
Environmental testing: Temperature profile, enclosure configuration and report reference.
EMC or immunity claims: Applicable test standard, covered model and results.
Traceability: Batch or serial reference, inspection date and recorded result.
Technical documents should identify the purchased version. Review our certification information and request model-specific records where applicable.
Factory and Assembly
The factory image provides manufacturing context. Request model-specific inspection and test records when evaluating ECU quality.
Frequently Asked Questions
Does every MP48 include OBD functionality?
No OBD function should be assumed from the MP48 name alone. Specify MP48OBD when requesting that version and confirm its supported protocols and functions.
Does OBD correction remove all engine fault codes?
No. Correction does not replace fault diagnosis. Engine condition, gas pressure, injector selection, wiring and calibration must be checked. Clearing a code does not repair its cause.
Can the ECU be used with both CNG and LPG?
Both applications require matched fuel-system components and settings. ECU compatibility does not make CNG and LPG regulators, storage equipment or other fuel-specific parts interchangeable.
Can I replace an existing MP48 with another MP48 unit?
Confirm hardware, firmware and wiring compatibility first. Send the current label, connector photographs, wiring information and calibration details before ordering a replacement.
Is professional installation required?
Qualified installation and calibration are required. Follow the component instructions and applicable local requirements. Verify wiring, sensors, operating settings and supported switch-back functions before service.
Request an MP48 ECU Kit Quotation
Specify the required version and engine application. Send the engine code, cylinder count, required fuel, injector model and OBD requirements. Include the destination country and order quantity.
Confirm the full supply scope before payment. Request accessory models, software access, warranty terms, lead time and the price for the selected configuration.
