The Emtron Shadow 8 is a compact wire-in engine control unit covering engines up to 8 cylinders. It is the most accessible Emtron ECU by price and fits builds where a full-size SL series unit is not required — track day cars, rally builds, and club motorsport vehicles running up to 8-cylinder engines.
The Shadow 8 connects to Emtron tuning software via USB-C and supports two CAN buses for peripherals such as lambda controllers, dash displays, and PDMs.
Specifications
| Property | Value |
|---|---|
| SKU | 1908-082 |
| Cylinders | Up to 8 |
| ECU type | Wire-in, compact |
| Processor | 100 MHz |
| RAM | 500 MB DDR |
| Logging memory | 16 MB |
| Logging channels | 1200+, 1 Hz–500 Hz |
| Accelerometer | Not fitted |
| GDI pump logic | 2× (Aux 11/12) — HPFP cam signal only, not DI injectors |
| Operating temperature | −30 to 110°C max; −30 to 85°C recommended |
| Injector outputs | 8× high-ohm, 6A continuous |
| Ignition outputs | 8× |
| Auxiliary outputs | 12× (PWM, max 10 kHz) |
| Analog inputs | 10× (0–5 V) |
| Digital inputs | 10× (0–5 kHz) |
| Knock inputs | 2× (1–20 kHz configurable) |
| Crank/sync inputs | 2× |
| Drive by Wire | 1× DBW control |
| CAN bus | 2× CAN 2.0B 1 Mbps, 6 ch/node |
| PC connection | USB-C |
| Connector | 68-way Super Seal, gold-plated |
| Dimensions | 152 × 139 × 26 mm |
| Weight | 520 g |
| Operating voltage | 6.0–22.0 V DC |
| Enclosure | Billet aluminium 6061 CNC |
Engine Management Features
- Drive by Wire (DBW) throttle control
- Boost control
- Gearshift control
- Knock control (2× inputs)
- Flex fuel / ethanol content
- Launch control
Accessories
- Emtron ECU Tuning Cable — USB-C cable for laptop connection
- Emtron ED7 Display — CAN-connected dash display
- Emtron ELC1 CAN Lambda Controller — wideband lambda via CAN
- Emtron ELC2 CAN Lambda Controller — dual wideband lambda via CAN
Shadow 8 vs SL Series
| Shadow 8 | SL4 | SL6 | SL8 | |
|---|---|---|---|---|
| Cylinders | Up to 8 | Up to 4 | Up to 6 | Up to 8 |
| Injector outputs | 8× | 4× | 6× | 8× |
| Ignition outputs | 8× | 4× | 6× | 8× |
| Analog inputs | 10× | 10× | 10× | 10× |
| Digital inputs | 10× | 6× | 8× | 10× |
| CAN buses | 2× | 1× | 2× | 2× |
| Logging memory | 16 MB | 32 MB | 32 MB | 32 MB |
| Logging channels | 1200+ | 1200+ | 1200+ | 1200+ |
| Accelerometer | — | 3-axis 16-bit | 3-axis 16-bit | 3-axis 16-bit |
| PC connection | USB-C | Ethernet | Ethernet | Ethernet |
| Processors | 1× 100 MHz | 2× 100 MHz | 2× 100 MHz | 2× 100 MHz |
The Shadow 8 is the value choice for builds that do not require Ethernet-based tuning or an internal accelerometer. The SL8 offers 32 MB logging memory, dual processors, Ethernet connectivity, and a built-in accelerometer for more demanding applications.
FAQ
Does the Emtron Shadow 8 have a built-in accelerometer?
No. The Shadow 8 does not include an internal accelerometer. If you need accelerometer data for traction control or data logging, the SL series ECUs include a 3-axis 16-bit accelerometer (±2/4/8g selectable).
How many logging channels does the Shadow 8 support?
The Shadow 8 supports over 1200 logging channels at rates from 1 Hz to 500 Hz, with 16 MB of on-board logging memory.
How does the Shadow 8 connect to a laptop for tuning?
Via USB-C. The Shadow 8 uses USB-C for communication with Emtune tuning software. The SL series uses 100 Mbps Ethernet instead, which offers faster data throughput for live data streaming and logging.
How many CAN buses does the Shadow 8 have?
Two CAN 2.0B buses, each running at 1 Mbps with 6 channels per node. This is enough to run a lambda controller, a dash display, and a PDM simultaneously.
What is the difference between the Emtron Shadow 8 and the SL4?
The Shadow 8 supports up to 8 cylinders vs 4 for the SL4, has 2× CAN buses vs 1×, and connects via USB-C. The SL4 has 32 MB logging memory (vs 16 MB), dual processors, Ethernet connectivity, and a built-in 3-axis accelerometer. The Shadow 8 is priced lower and suits builds where Ethernet tuning and an internal accelerometer are not required.
Is the Shadow 8 waterproof?
The Shadow 8 uses a 68-way Super Seal waterproof connector with gold-plated contacts. The billet aluminium enclosure provides environmental protection suitable for motorsport use, but the ECU should be mounted away from direct water spray.
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