Syvecs S7D-4

Syvecs S7D-4: direct-injection control and specifications

S7D-4 provides integrated control for up to four direct-injection injectors, with four ignition outputs. Its 12 low-side port-injector/PWM outputs are a separate channel allocation for port injection or compatible actuators.

This version suits a control plan that fits four DI channels and four ignition channels. It is not an eight-DI-channel ECU; the model-specific wiring manual lists four DI injector outputs.

Verified output specification

• 4 direct-injection injector outputs with integrated driver hardware
• 4 ignition outputs; TTL or IGBT hardware selected at order time
• 2 direct-injection pump outputs; confirm the supplied build configuration and pump compatibility
• 12 low-side port-injector/PWM outputs
• 6 additional low-side PWM outputs
• Main relay control with power hold

Inputs and communication

The manual lists 14 frequency inputs, 4 ADC voltage inputs, 4 thermistor inputs, 2 knock inputs and 2 EGT thermocouple inputs. Wideband-lambda hardware choices are specified at order time. Communication includes 3 CAN buses with CAN FD support, LIN, RS232, Ethernet and USB interfaces.

Ignition and pump-control planning

Confirm the coil and igniter arrangement for the four ignition outputs. TTL versus IGBT is a build-time choice, not a software-only setting.

Verify the direct-injector type, required current-control setup and high-pressure-pump control with the installer. The pump outputs and driver configuration must match the supplied ECU build and the actual fuel system.

Before ordering

• Provide the engine code, vehicle, transmission and intended fuel system.
• Confirm DI, port-injection and ignition channel assignments separately.
• Specify TTL or IGBT ignition hardware and any required wideband-lambda configuration.
• Confirm the harness, connectors, sensors, software configuration and retained factory-module communication.
• Check what the quote includes; do not assume a universal ECU listing includes a vehicle-specific plug-and-play harness or calibration.

Installation and commissioning should be carried out by a competent installer and calibrator using the manual for the supplied hardware.

Manufacturer documentation

Read the Syvecs S7D-4 wiring manual: page 4 lists the output specification, page 29 covers ignition requirements and page 34 covers DI injectors and pump outputs.

Need to compare the options? Read our Syvecs ECU buyer guide for channel types, direct-injection requirements and installation costs.