Gearbox Tuning
At JME Performance in Blyth, we specialise in professional gearbox tuning, also known as Transmission Control Unit (TCU) remapping. For vehicles equipped with automatic transmissions, this advanced service optimises how your gearbox operates, delivering a more responsive, efficient, and exhilarating driving experience. Whether you’re seeking quicker gear changes, improved power transfer, or a more engaging feel, our expert technicians can precisely calibrate your gearbox to unleash its full potential.
What is Gearbox Tuning (TCU Remapping)?
Modern automatic transmissions are controlled by a dedicated computer module called the Transmission Control Unit (TCU). Just like your Engine Control Unit (ECU), the TCU contains software that dictates how the gearbox functions, including:
Shift Points: When the gearbox changes up or down gears.
Shift Speed: How quickly the gear changes occur.
Torque Limiters: The maximum amount of torque the gearbox is allowed to transmit.
Clutch Clamping Pressure: The pressure applied to clutch packs within the gearbox, affecting how firmly it engages gears.
Launch Control: Optimized start-off sequences for maximum acceleration.
Driving Modes: Characteristics of different driving modes (e.g., Comfort, Sport, Manual).
Manufacturers often program TCUs with conservative settings to cater to a wide range of drivers, maximise component lifespan for mass production, and adhere to specific emissions or comfort targets. Gearbox tuning involves remapping the TCU software to adjust these parameters, tailoring the gearbox’s behaviour to your specific driving style and vehicle modifications.
At JME Performance, we utilise industry-leading tools and software to provide bespoke gearbox tuning solutions for a wide range of automatic transmissions, including popular ZF 6HP/8HP and DSG/DCT units. Our meticulous process ensures optimal results:
Comprehensive Diagnostic Scan: We always begin with a full diagnostic check of your vehicle and gearbox to identify any existing faults and ensure the transmission is in healthy working order.
Original TCU Data Read: Our specialists connect to your vehicle’s TCU and safely read the original software data.
Customised Map Development: Based on your specific vehicle, your driving style, and any engine modifications, we develop a custom-tuned TCU map. This involves precisely adjusting parameters such as:
Shift speeds and aggression
Torque limiter thresholds
Clutch pressures
Shift points for different driving modes
Activation of advanced features (e.g., launch control where available)
Flawless Data Flashing: The new, optimised TCU map is then professionally written back to your vehicle’s Transmission Control Unit. We use high-quality battery support during this process to ensure stable voltage and prevent any issues.
Post-Tuning Verification: After the remapping, we conduct thorough checks and, if appropriate, road test the vehicle to verify that the gearbox is performing as expected and that all parameters are correctly set.
Expert Guidance: We provide clear advice on the benefits and considerations of gearbox tuning, ensuring you are fully informed throughout the process.