Modern automatic and dual-clutch transmissions are controlled by their own computers, known as Transmission Control Units (TCUs). Just like the engine ECU, they are programmed conservatively by manufacturers. DSG and TCU remapping by RAT Remaps & Tuning optimises gearbox performance, improving shift speed, torque capacity, and responsiveness to perfectly complement your tuned engine.
A TCU tune adjusts how your transmission behaves, including gear shift points, clutch pressure, and torque limits. It can transform a sluggish automatic gearbox into a sharp, performance-focused unit that reacts instantly to driver input.
Increased torque limit handling, allowing the gearbox to manage higher engine output.
Faster and smoother gear shifts with reduced shift lag.
Faster and smoother gear shifts with reduced shift lag.
Optimised shift points for both daily driving and spirited performance.
Custom drive modes — for example, more aggressive Sport mode or refined Comfort settings.
✅ Pre-tuning diagnostics to ensure the gearbox is in good health.
✅ Reading the TCU software and identifying factory limitations.
✅ Custom tuning of shift maps, torque parameters, and clutch behaviour.
✅ Testing and optimisation to ensure seamless integration with the ECU tune.
A gearbox remap is often the missing link in a tuning project. When combined with an ECU upgrade, it ensures that both engine and transmission work together as a unified system, unlocking the full potential of your vehicle.
Copyright © 2025 Remapsandtuning All rights reserved.
