ECU/TCU/TXW Management Systems
Unleash The Control, Feel The Power
Practical Engine & Transmission Management Solutions
Our Latest Controllers
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.
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Both offer three different tuning method options, allowing tuners to choose the workflow best suited to their experience level or application needs.
- Graph
- Matrix
- Matrix in Graph mode
- Technology in today's times evolves at a rapid pace and we aim to stay ahead in the game by consistently evolving & redeveloping our software to bring hot new features, better Tuning tools and more comprehensive, performance orientated software. Our Cosmos package offers:
- 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!
Training
- The Auto Performance world is ever evolving and so are we. The Spitronics brand is committed to help in this transition and this means leveling-up to grow with the industry and the brand and bring in new skills to keep up with the pace.
- Our Spitronics Wholesaler & Trainer Armando Viljoen from APC offers his expertise and extensive product knowledge and offers in-person training courses consisting of never more than 30 persons per event to keep the training room geared to an optimal learning experience. We offer such Training events from time to time in various areas in South Africa, Namibia, Zimbabwe and Mozambique. Ours courses run for 2-3 consecutive days and we cover………
- Basic product knowledge & choosing the right ECU per application.
- Basic installation, tips & troubleshooting
- Software navigation and adjustment.
- Start-up procedure & basic Tuning
- … In the course Armando often invites guest speaker & Dyno Tuning expert, Schalk from Dyno Logic in Pretoria, with 30 years of industry experience,
- Connect to our social or join up to our newsletter to stay informed. Send us a Training Inquiry if you want to level up.
Comms &
Mobile Tuning
- Spitronics ECU & TCU controllers connect to the tuning software using a Spitronics USB/UART communication cable.
- A Spitronics Bluetooth module is also available for wireless connectivity.
- Spitronics Mobile Tuning App (Android devices only) together with our the BT module makes a niche perfermance optermising tool in the field.
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Or for quick on-the-go race day dual map live data logging. or road tune tweeks.
This connection allows users to:
- Synchronize the ECU with the tuning software
- Perform configuration and tuning
- Read diagnostic error codes
- Troubleshoot system issues
- This option offers data logger included so that you can do remote assistance for distant customers.
- Simply record a run on the phone, send the map & data log info to your tuner. He is able to then modifie the map offline on his laptop using Matrix maps. He saves the tweeks and the offline map and send it back to the customer. Customer loads in modified map with his phone and its light out.....
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.
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 | |||||||
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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
- And More…
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
Modern automatic transmissions rely heavily on electronic control to deliver smooth shifting, performance, and durability. A dedicated Transmission Control Unit (TCU) manages gear selection, line pressure, torque converter lock-up, and shift timing based on inputs such as engine RPM, vehicle speed, throttle position and transmission temperature. Spitronics transmission control systems allow tuners...
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