POWER STARTS WITH CONTROL
POWER STARTS WITH CONTROL
+
1UZ engine & transmission Conversion Control Units installed worldwide
%
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Welcome to Spitronics
Spitronics develops practical engine and transmission control systems designed for real-world automotive applications.
The systems are engineered to give tuners, builders, and enthusiasts reliable control over fuel injection, ignition timing, automatic transmissions, and throttle-by-wire systems. The focus has always been on creating solutions that are powerful, flexible, and easy to install, without unnecessary complexity.
Developed in South Africa, Spitronics controllers are used in a wide range of vehicles, including performance street cars, racing engines, drift cars, off-road vehicles, and custom engine conversions. The systems are designed with both professional installers and experienced DIY builders in mind.
Over many years of development, the platform has grown to support numerous engine and transmission configurations, allowing builders to confidently integrate modern electronic control into both new and classic vehicles.
With robust hardware, flexible firmware, and intuitive tuning software, Spitronics products help builders achieve better performance, improved drivability, and reliable control in demanding automotive applications.
TECHNICAL
FEATURES
Hardware
- Spitronics PCB/controllers undergo a 3-Step testing procedure. PCB's are manufactured using a machine-soldered process. High quality electronic components are chosen in our product design process to ensure product reliability & future development capabilities.
- 1st testing is carried out at the initial manufacturing stage.
- 2nd testing is done in-house before receiving in any stock.
- 3rd phase QC testing is carried out finally once product is ordered. Our crew use a simulation process to manually ensure products are working optimally to ensure product satisfaction.
- The Mercury3 controller range is resin-potted, making it highly durable and suitable for demanding environments such as off-road, frozen and 4 x 4 motorsport vehicles.
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Available harness options include:
- Universal wire-and-plug harnesses
- Plug-and-play harness options for specific vehicle applications
Software
- All Spitronics software is free to download from the website on the download page.
- Mercury3 controllers using the older HYPERSPACE 3.6 and 3.7 versions & our newest Callisto ECU, TCU or TxW controllers using the COSMOS Ver.1 software package.
- Graph
- Matrix
- Matrix in Graph mode
- Interactive tuning prompts
- Integrated setup guidance
- Advanced configuration tools
- Electronics & engine protection
Support
- All product manuals, drawings/ wiring diagrams, software, and technical info is available as freeware on our website under our Downloads section or via the Spitronics Support App for mobile (Android).
- Our newly developed and growing Knowledge base platform equipped with AI-assisted & quick search functionality
- Direct phone support during business hours with experienced technicians ready to assist.
- Remote diagnostic capabilities allowing our team to connect directly to your system for troubleshooting.
- Active user community forum for sharing maps, tips, and vehicle-specific configurations.
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Technical forum providing a space too:
- Connect on a shared space a global community users can
- Share project builds & Knowledge
- Exchange tips & troubleshooting advice on installation and tuning techniques
- Expand industry knowledge surrounding engine management & performance
- If you still require assistance, contact our support team:
Email: support@spitronics.com
WhatsApp: +27 63 944 0486
Infrastructure &
Distribution Network
- Spitronics brand products are Developed, designed & manufactured by Eezirider Engine Management PTY Ltd. and distributed globally through an established network of wholesalers and dealers.
- Our distribution partners bring extensive industry experience and a shared passion for performance engineering. They understand both the product range and real-world applications, ensuring customers receive the correct system and configuration for their specific build.
- Wholesalers manage their own dealer networks, many of whom are trained installers and tuners with hands-on experience. This provides customers with access to expert advice, professional installations, and reliable tuning support. Find A Dealer
Become A Dealer
Firmware
- The Spitronics Firmware is the embedded program installed inside the Spitronics control unit managing critical engine/transmission functions such as fuel delivery, ignition timing, and sensor processing etc in real time.
- Our Mercury3 features interchangeable firmware, perfect for dealers managing stock or builders who want to reuse controllers across multiple projects. Firmware updates are easily accessible through the software for the product’s lifecycle, ensuring long-term flexibility and performance.
- The Callisto range is supplied with locked firmware, simplifying setup and preventing incorrect applications. Callisto controllers can also be supplied unactivated to dealers, helping reduce inventory costs, with activation only required when units are sold. All dedicated kits are firmware-locked and compiled specifically for each application.
- Spitronics supports a wide range of engine, transmission, and throttle-by-wire applications, providing reliable control and optimized performance for every build. Get a Quote today to find the system that best suits your project.
Kits
Back by popular demand, Spitronics ECU & TCU kits, offering convenient packages for installers and builders.
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Universal Kit Options:
Universal kits typically include:
- ECU/TCU/TxW Controller
- Wiring Harnesses
- MAP Sensor
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Dedicated Kit Options:
- Dedicated kits provide vehicle-specific wiring looms and firmware designed for particular applications. These kits are pre-configured to simplify installation and ensure optimal performance for the intended setup.
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Each kit includes:
- Dedicated/Universal wire-and-plug harness
- MAP sensor (ECU)
- All manuals, drawings, and software
- Pre-loaded firmware
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Some kits may also include additional items:
- Gear (trigger wheel)
- Idle control
- Launch control buttons
- Rapid Fire pot & button
- Triptronic buttons & 4 k Potentiometer
Contact us now to get a price for your next project!
FAQ
Comms &
Mobile Tuning
Guarantees, Repairs
& Returns Policy
- Repairs
Spitronics has a dedicated PCB electronics specialist If a unit is damaged or malfunctioning, our technician will assess the device and provide professional repair recommendations where possible.
Contact: support@spitronics.com - Guarantees
Every Spitronics product undergoes a three-stage quality control process before leaving headquarters.As standard for electronic components, we provide a 1-month product guarantee against manufacturing defects.Because Spitronics products are designed primarily for the DIY performance market, we cannot control how or by whom the product is installed or used. For this reason, extended warranties are not offered. - Returns
All return requests must be sent to the original supplier with a clear explanation of the issue. Returns are subject to the following conditions: Items must be returned in the same untampered condition in which they left headquarters. A 30% handling fee may apply. Returns must have a valid reason, and Spitronics reserves the right to refuse the request.
Please refer to our Terms & Conditions of Use for full details.
TECHNICAL
FEATURES
Hardware
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Level: Standard
Software
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Level: Intermediate
Support
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Level: Advanced
OUR RANGE OF
CONTROLLERS
FEATURE
COMPARISON
Feature Notes
- # Wide Band Requires External Electronic Converter
- $ Stepper Motors Requires External Electronic Converter
- * Optional sensor must be installed if MAP sensor is in use
- % Dependant on selections as it is shared I/O
- & Requires activation and Bluetooth module
- @ Developed on request
- ^ Depending on trigger wheel increments
| Feature | Callisto | Mercury3 | ||||||
|---|---|---|---|---|---|---|---|---|
| Commercial | Race Pack | Notes | Standard | Intermediate | Advanced | Ultimate | Notes | |
| Firmware | ||||||||
| Locked Firmware | X | X | ||||||
| User Interchangeable Firmware | X | X | X | X | ||||
| Tuning Software | ||||||||
| Hyperspace | X | X | X | X | X | X | ||
| Cosmos / EeziTune | X | X | X | X | ||||
| Inputs | ||||||||
| Map Sensor | X | X | X | X | X | X | ||
| TPS Sensor | X | X | X | X | X | X | ||
| Water Temperature Sensor | X | X | X | X | X | X | ||
| Air Temperature Sensor | X | X | X | X | X | X | ||
| Lambda Sensor | X | X | X | X | X | X | ||
| Altitude Sensor OnBoard | X | X | * | |||||
| Altitude Sensor External | X | X | X | X | ||||
| POT Sensor | X | X | X | X | % | |||
| Fuel Pressure Sensor | X | |||||||
| Digital Switch | X | X | X | X | % | |||
| Crank TDC Sensor | X | X | X | X | X | X | ||
| Cam Home Sensor | X | X | X | X | X | |||
| Cam1 VVTI Sensor | X | X | X | X | X | |||
| Cam2 VVTI Sensor | X | X | X | X | X | |||
| Outputs | ||||||||
| HV Negative Drivers (above 300V) | 12 | 12 | ||||||
| MV Negative Drivers (above 100V) | 8 | 8 | 8 | 8 | ||||
| LV Negative Drivers (above 40V) | 2 | 2 | 4 | 4 | 4 | 4 | ||
| LV Positive Drivers | 6 | 6 | 8 | 8 | 8 | 8 | ||
| Features | ||||||||
| Full Sequential Spark | X | @ | X | @ | ||||
| Wasted Spark | X | X | X | X | ||||
| Dual Distributor | X | X | X | X | ||||
| Distributor | X | X | X | X | X | X | ||
| Basic Coil Drivers | 12 | 12 | % | |||||
| Smart Coil Drivers | 6 | 6 | 1 | 8 | 8 | 8 | ||
| Full Sequential Injection | X | X | X | |||||
| Split Sequential Injection | X | X | X | X | ||||
| Injector Trimming | 8 | % | 8 | |||||
| Fuel Pressure Control | X | X | ||||||
| Dual Injectors Ratio Method | X | @ | X | X | % | |||
| Dual Injectors Graph Method | X | @ | X | X | % | |||
| Automatic Torque Control | X | X | X | |||||
| Injection Angle Adjustments | X | X | ^ | X | X | ^ | ||
| Spinning Control | X | |||||||
| Launch Control | X | X | X | X | ||||
| Launch Retard to -30° Gear Trigger | X | X | ||||||
| Launch Retard to 0° | X | X | X | X | ||||
| Launch Recover Delay | X | X | ||||||
| Anti-Lag Control | X | X | X | |||||
| Dual Maps | X | X | X | X | ||||
| RapidFire | X | X | X | X | ||||
| Flat-Shift Control | X | X | X | |||||
| POT Input | X | X | X | X | ||||
| TuneBox Capable | X | |||||||
| Open Loop Cam Control | X | X | X | X | X | |||
| Intake Flap Control | X | X | X | X | ||||
| GP Outputs | 6 | 6 | % | 2 | 10 | 10 | 10 | % |
| Android Pack | X | X | & | X | X | X | X | & |
| Lambda Control | X | X | # | X | X | X | X | # |
| Idle Control | X | X | $ | X | X | X | X | $ |
| V-Tech/Intake Flap | X | X | X | X | X | |||
| TPS Compensation Graph | X | X | X | X | X | X | ||
| Water Temp Compensation | X | X | X | X | X | X | ||
| Air Temp Compensation | X | X | X | X | X | X | ||
| Altitude Compensation | X | X | * | X | X | X | X | * |
| Fuel Pressure Control | X | |||||||
Shop
Mercury 3
Callisto
| Features | Std. | Int. | Adv. | Ult. | Stock Class | Racing Class |
| Graph Tuning MAP | ✔ | ✔ | ✔ | ✔ | ✔ | ✔ |
| Matrix Tuning MAP or TPS | ✔ | ✔ | ✔ | ✔ | ✔ | ✔ |
| Altitude Compensation | ✔ | ✔ | ✔ | ✔ | ✔ | ✔ |
| Idle Control | ✔ | ✔ | ✔ | ✔ | ✔ | ✔ |
| Dual Maps | ✔ | ✔ | ✔ | ✔ | ✔ | ✔ |
| Dual Injectors | ✔ | ✔ | ||||
| Split Sequential Injection | ✔ | ✔ | ✔ | ✔ | ✔ | ✔ |
| Full Sequential Injection | ✔ | ✔ | ✔ | |||
| Fuel Pressure Control | ✔ | ✔ | ✔ | |||
| VVTI Cam Control Open Loop | ✔ | ✔ | ✔ | |||
| VVTI Cam Control Closed Loop | ✔ | ✔ | ||||
| V-Tech /Vanos Cam Control | ✔ | ✔ | ✔ | ✔ | ✔ | ✔ |
| Launch control | ✔ | ✔ | ✔ | |||
| Launch control Delay | ✔ | ✔ | ✔ | |||
| Anti-Lag control | ✔ | ✔ | ✔ | |||
| Flat-Shift control | ✔ | ✔ | ✔ | |||
| RPM Calibration | ✔ | ✔ | ✔ | ✔ | ✔ | ✔ |
| Price | R3162 | R3596 | R4305 | R5065 | Rxxx | Rxxx |
Product Overview:
| Feature | Details |
|---|---|
| Model | Mercury 3 ECU |
| Engine Support | 1 to 12-cylinder engines (up to 2 distributors) |
| Fuel Control | Sequential, semi-sequential, and batch fire |
| Ignition Control | Individual coil, wasted spark, or distributor ignition |
| Boost Control | Yes (PWM-based) |
| VVT Control | Yes (up to 2 camshafts) |
| Drive-by-Wire Support | No |
| CAN Bus Communication | Yes – for integration with dashboards and expansion modules |
| MAP Sensor | Onboard 4 Bar MAP |
| Wideband Lambda Support | Via external controller (0-5V analog input) |
| Feature | Details |
|---|---|
| Launch Control | Yes |
| Traction Control | Basic (via wheel speed input) |
| Rev Limiter | Fuel cut and ignition cut available |
| Data Logging | Internal logging via Spitronics software |
| Tuning Software | Hyperspace ECU Manager |
| Firmware Updates | Yes – via Bluetooth, USB, Serial |
| Inputs/Outputs | Configurable I/Os – analog and digital |
| Communication Ports | UART |
Application Suitability | Street, performance, off-road, marine |
| Price Range | R3162 – R5065 |
Product Overview:
| Feature | Details |
|---|---|
| Model | Mercury 3 ECU |
| Engine Support | 1 to 12-cylinder engines (up to 2 distributors) |
| Fuel Control | Sequential, semi-sequential, and batch fire |
| Ignition Control | Individual coil, wasted spark, or distributor ignition |
| Boost Control | Yes (PWM-based) |
| VVT Control | Yes (up to 2 camshafts) |
| Drive-by-Wire Support | No |
| CAN Bus Communication | Yes – for integration with dashboards and expansion modules |
| MAP Sensor | Onboard 4 Bar MAP |
| Wideband Lambda Support | Via external controller (0-5V analog input) |
| Feature | Details |
|---|---|
| Model | Mercury 3 ECU |
| Engine Support | 1 to 12-cylinder engines (up to 2 distributors) |
| Fuel Control | Sequential, semi-sequential, and batch fire |
| Ignition Control | Individual coil, wasted spark, or distributor ignition |
| Boost Control | Yes (PWM-based) |
| VVT Control | Yes (up to 2 camshafts) |
| Drive-by-Wire Support | No |
| CAN Bus Communication | Yes – for integration with dashboards and expansion modules |
| MAP Sensor | Onboard 4 Bar MAP |
| Wideband Lambda Support | Via external controller (0-5V analog input) |
Standalone Transmission Control Units (TCU)
A standalone transmission control unit (TCU) allows modern electronically controlled automatic transmissions to operate independently from the original vehicle ECU. This is ideal for engine swaps, performance builds, and classic vehicle upgrades where factory electronics are unavailable or incompatible.
Spitronics programmable TCUs enable popular electronically controlled gearboxes to run in custom vehicles while maintaining smooth shifting, torque converter lock-up control, and reliable line pressure management. Tuners can adjust shift points, line pressure curves, and lock-up strategies to match the engine’s power characteristics and driving style.
These systems are commonly used in performance street cars, drift cars, race vehicles, and off-road builds, where transmission behaviour must be optimized for durability and performance. A programmable TCU provides the flexibility to tailor transmission behaviour for daily driving, towing, or aggressive motorsport shifting, ensuring the transmission works perfectly with the engine and vehicle setup.
Popular transmissions supported
- Toyota A340
- Toyota A341
- Toyota A650
- ZF 6HP
- GM 4L60E
- GM 4L80E
- Mercedes 722.6
TECHNICAL
DETAILS
Dealers
Spitronics ECUs are built for dependable performance in custom builds and motorsport applications. Designed for clean signal control, flexible wiring, and straightforward setup, each unit supports engines like the Toyota 1UZ and many other popular conversions. With proven durability and easy tuning integration, Spitronics hardware gives builders a reliable foundation to run, manage, and optimise their engine with confidence.
Level: Standard
Training
Spitronics tuning software is designed for clarity, precision, and fast workflow. It provides real-time monitoring, intuitive mapping, and flexible configuration for engines like the Toyota 1UZ and other popular conversions. With stable communication and clear diagnostics, the software lets tuners quickly dial in performance, refine drivability, and manage engine behaviour with confidence.
Level: Intermediate
Guarantees & Repairs
Spitronics support is built around real-world automotive experience. From installation guidance to advanced tuning advice, our team helps builders get the most from their ECU setup. With practical documentation, responsive assistance, and a strong community of users, you can rely on knowledgeable support throughout your build and tuning process.
Level: Advanced
BECAUSE POWER WITHOUT CONTROL IS NOTHING
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Custom Builds Tuned
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Countries Served
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OUR KNOWLEDGE BASE
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Why Our Customers Choose Spitronics
