Spark Gap X4 - Standalone Engine Management Kit

Experience the best of both worlds – the freedom of open source with the convenience of ready-to-use hardware. Our standalone ECUs embody the spirit of innovation with 100% open source technology, featuring the renowned Speeduino open source firmware. Not only is the firmware customizable, but the OpenLogicEFI hardware itself is also open source.

Affordability: Compared to other high-performance ECU kits on the market, our products are an affordable option that does not compromise on quality or reliability.

Supportive Community: With well-documented instructions and a large community of users, you'll have plenty of resources to turn to if you need help or advice.

Fully Tested Before Shipping: Each unit is thoroughly tested before shipping, ensuring that it meets our high standards for quality and reliability.

Hardware Feature List:

Supports up to 8 cylinders fuel and ignition using 4 channels of fuel and 4 channels of ignition outputs, for 2 (Even fire only), 3, and 4-cylinder engines with full sequential fuel and ignition. 6 (even fire only) and 8-cylinder engines are supported with wasted spark and 2 squirts per cycle.

• 4 Injector output channels.

• 4 Ignition output channels with selectable logic levels (12V/5V).

• 4 Pre-configured analog input channels for CLT, IAT, TPS, and O2 sensors.

• Up to 3 customizable spare analog inputs (oil pressure, fuel pressure, etc.).

• Up to 3 trigger inputs for crankshaft and (2) camshaft position sensors.

• Up to 2 customizable spare digital inputs (VSS, external switches, etc.).

• 1 Dual VR conditioner mount (conditioner not included).

• 1 (4-bar) MAP sensor for reliably reading boost up to 43 PSI.

• 1 Barometric sensor.

• 1 DRV8825 stepper module mount for controlling stepper idle control valves.

• 6 Pre-configured outputs (default: fan, fuel pump, idle control valve (x2), boost control, VVT). *Note: idle control valve outputs are shared with DRV8825.

• 2 Customizable spare outputs (0.4A max, ground switching).

• 1 Pre-configured output for tachometer.

• 1 Flex fuel sensor input.

• 1 Clutch switch input (ground switching).

• 2 Serial headers (Serial0 and Serial3), often used with HC-05/HC-06 Bluetooth module (see Speeduino Wiki for setup instructions).

• 1 USB-C header (when a USB connection is detected, the onboard Serial0 header is automatically disabled until the USB connection is removed).

*Main header soldering required