4-Cylinder CNG/LPG Multipoint Sequential ECU with OBD-II
Our 4-cylinder CNG/LPG multipoint ECU is a dedicated controller for gasoline-to-CNG or LPG dual-fuel vehicle conversion. It features OBD-II communication and delivers accurate multipoint sequential gas injection control for 4-cylinder gasoline engines. It is widely used for passenger cars, taxis and light commercial vehicles.
This autogas ECU runs in sync with original petrol injector signals. Via OBD-II CAN / K-line ports, it collects real-time engine data and performs closed-loop air-fuel ratio correction. It optimizes gas injection pulse width, lowers fault code risks, and supports smooth switching between petrol and gas fuel modes. Every unit passes full-range quality testing to deliver stable performance for conversion workshops, distributors and fleet operators worldwide.
It meets local emission standards for CNG and LPG vehicles to help reduce carbon emissions. Made of high-strength ABS plastic housing, it fits 3-cylinder and 4-cylinder engines for long-term service. A 1-year warranty is included for buyer confidence.
The built-in OBD-II function supports quick diagnosis and troubleshooting for autogas systems. Users can locate and resolve system problems faster to save maintenance time and costs.
Key Features
Designed for 4-cylinder multipoint / sequential CNG & LPG conversion systems, dual-fuel compatible
OBD-II support: read OEM fuel trim data, read & clear DTC fault codes, real-time closed-loop mixture adjustment
Accurate gas injection timing simulation, prevents original engine MIL warning lamp under gas mode
Wide operating voltage DC 10-16V, temperature range -40℃ ~ +110℃, adapts to harsh under-hood conditions
PC software calibration available, simple parameter tuning for different engine status
Heavy-duty housing, automotive anti-interference circuit for long road-time durability
Fully compatible with injector rails, pressure reducers, sensors and full conversion kits
OEM & custom service available for bulk purchase orders
Specifications Highlights
Product Name: CNG LPG Multipoint ECU
Core Function: OBD-II Diagnosis & Closed-Loop Correction
Warranty: 1 Year
Operating Voltage: DC 10-16V (12V nominal)
Supported Cylinders: 3-cylinder, 4-cylinder
Quality: Full professional factory testing
Built-in multiple protection functions
System self-diagnosis function
User-friendly operation & setup
Main Applications
4-cylinder gasoline passenger cars for CNG / LPG retrofit
Taxis, fleet vehicles and light-duty dual-fuel commercial vehicles
Vehicle modification garages and autogas conversion project integrators
Global distributors sourcing complete autogas conversion spare parts
Technical Parameters
| Supported Engine | 4-cylinder multipoint injection gasoline engine (CNG / LPG dual-fuel) |
| Working Voltage | DC 10V-16V |
| Operating Temperature | -40℃ ~ +110℃ |
| Fuel Type | CNG (Compressed Natural Gas), LPG (Liquefied Petroleum Gas) |
| Calibration Method | PC software programmable tuning |
Frequently Asked Questions
Q: What vehicles fit this 4-cylinder OBD-II multipoint ECU?
A: It fits most 4-cylinder multipoint gasoline injection engines for passenger cars, taxis and light vans. It supports both CNG and LPG gas systems. Please confirm engine injection type before installation.
Q: What benefits does OBD-II bring to this autogas ECU?
A: OBD-II reads factory fuel-trim data in real-time and auto-adjusts gas injection parameters. It reduces engine warning lamp issues, improves gas combustion efficiency and keeps stable driving performance.
Q: Do I need special software for ECU calibration?
A: Yes. Dedicated PC tuning software is required for parameter setup during installation, which is supplied together with products.
Q: Can I buy only the ECU instead of full conversion kits?
A: Both options are supported. You can order ECU unit separately, or purchase complete multipoint conversion kits including injector rail, reducer and wiring harness.
Q: Can you provide OEM customization?
A: Yes. OEM service covers housing, connector and software parameter customization for bulk orders.
Why Choose Our OBD-II Multipoint Gas ECU
Compared with ordinary non-OBD gas ECUs, this OBD-II enabled controller solves common retrofit pain points: unstable idle speed, power loss and MIL warning light. Strict factory testing ensures consistent quality. It is cost-effective for aftermarket autogas conversion projects and widely exported to Latin America, Southeast Asia, Middle East, Africa and Central Asia markets.
