Transmission Tuning
Gearbox / TCU Tuning
Transmission control unit tuning for quicker, smoother shifts and higher torque limits on automatic and DSG gearboxes.
What is gearbox / TCU tuning?
Gearbox tuning, also known as TCU (transmission control unit) tuning, optimises the software that controls your automatic or DSG gearbox. Just like your engine's ECU, the transmission has its own control unit that decides how and when the car changes gear, how firmly it shifts and how much torque it will allow through.
By recalibrating that software we deliver faster, crisper gear changes, smarter shift points and, importantly, raised torque limits so the transmission can safely handle the extra output from a remapped engine. Every TCU calibration is developed and tested in-house and backed by our lifetime software warranty.
The benefits
What you can expect
Faster gear changes
Quicker, more decisive shifts that make the car feel sharper and more responsive, especially under acceleration.
Higher torque limits
Raised transmission torque limits so your gearbox can safely cope with the extra output from a remapped engine.
Smarter shift behaviour
Optimised shift points and reduced unwanted 'hunting' between gears for a more composed, planted drive.
Smoother everyday driving
Refined calibration improves how the gearbox behaves in normal driving, not just when you're pushing on.
How it works
A simple, proven process
Check your gearbox
Tell us your vehicle and transmission. We'll confirm whether your gearbox can be tuned and what improvements to expect.
Read the TCU
We safely read the original software from your transmission control unit and keep a secure backup of your factory file.
Custom calibration
Our engineers develop a bespoke TCU map for faster shifts, optimised shift points and raised torque limits where suitable.
Test & hand back
We road-test to confirm smooth, reliable shifting, then hand over with your lifetime software warranty in place.
Frequently asked questions
Common questions about our gearbox / tcu tuning service.
Vehicles we tune
Popular manufacturers
We remap a huge range of makes and models across the UK. Explore tuning by manufacturer.
Where we work
Areas we cover
Visit our Leeds workshop or use our nationwide mobile service across West Yorkshire and beyond.
Ready to unlock your vehicle's potential?
Get a free, no-obligation quote today. Speak to a real tuning specialist.