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Upgrade your VW, Audi, Seat, or Skoda performance with RM Primis — the next-generation standalone ECU engineered for Motronic M3.8.2, M3.8.4, and M3.8.5 platforms.
Take your VAG engine management to the next level with the RM Primis Standalone ECU, a direct plug-and-play replacement for factory Bosch Motronic ECUs.
Developed by RM Racing Electronics, this system brings motorsport-level precision, reliability, and customization to engines like the AGU, AEB, AJL, ANB, and other 1.8T or turbocharged VAG engines.
Whether you’re tuning for daily driving, drag racing, or full track builds, Primis offers complete control over fuel, ignition, boost, and VVT, with advanced datalogging and safety features — all managed through our proprietary RM-Tuner software.
Full Engine Management Control: Take command of all vital engine parameters, from injection to ignition and boost pressure.
Plug & Play Installation: Compatible with Bosch Motronic M3.8.2 / M3.8.4 / M3.8.5 ECUs — no wiring modifications needed.
Transmission Compatibility:
Native CAN-bus integration for ZF 8HP automatic transmission (no external module required).
Beta support for VAG DSG transmissions.
Motorsport-Ready Functions: Built-in antilag, launch control, and boost by gear strategies for maximum performance.
Free Online Help Center: Get setup instructions, wiring guides, and advanced tuning resources at the [Primis Help Center].
For Motorsport & Off-Road Use Only: Designed for racing environments (per RM Racing Electronics policy).
Feature | Specification |
---|---|
Engine Compatibility | AGU, AEB, AJL, ANB, and other 1.8T variants |
Software Platform | RM-Tuner (proprietary tuning & datalogging) |
Internal MAP Sensor | 400 kPa (supports up to ~43 psi boost) |
Ignition Channels | 6 |
Injector Channels | 6 |
Low-Side Outputs (GP) | 6 |
High-Side Outputs (GP) | 4 |
VR Sensor Inputs | 1–2 |
Digital Inputs | 3 |
Knock Sensor Inputs | 2 |
Wideband Support | Bosch LSU 4.9 / LSU 4.2 (NTK under testing) |
Electronic Throttle Control | 1 |
Analog Inputs (GP) | 8 |
Dedicated Sensor Inputs | IAT, CLT, TPS |
CAN Bus Support | Yes (fully programmable) |
Programmable I/O | Yes (customizable logic rules) |
Boost Control | Open/Closed-loop PID (dual table support) |
VVT Control | 2 channels, open/closed loop |
Idle Control | Open/Closed-loop, 1-wire / 3-wire valve or ignition-based mode |
RM Primis ECU Unit
Plug-and-Play Harness Adaptor (for Motronic M3.8.2 / M3.8.4 / M3.8.5 VAG platforms)
ECU Adaptor Cable
USB Communication Cable
Quick Start Manual & Welcome Pack
Extra Terminals and Connectors
Seamless Plug-and-Play Integration with factory harnesses — no soldering, no rewiring.
Built for Performance & Reliability — designed, tested, and assembled by RM Racing Electronics.
Motorsport-Grade Control — precision mapping, closed-loop boost, VVT, and knock management.
Comprehensive Software Suite — tune, log, and adjust on the fly with RM-Tuner.
Technical Support & Documentation — full access to diagrams, guides, and tutorials via our [Help Center].
Built from the ground up for VAG performance engines, the Primis Standalone ECU brings OEM-level reliability with motorsport functionality. From daily driving to track dominance, it’s the ultimate ECU solution for enthusiasts and professionals alike.