Gearbox and transmission remapping
When you remap the engine, the gearbox needs to know about it. A gearbox remap, also called a TCU remap, updates the transmission control unit separately from the engine ECU, so the two work together rather than against each other. At Manchester Dyno Centre, we carry out TCU remapping on DSG, ZF8, and DCT gearboxes, developed and verified on our 4WD Bapro dynamometer.
What is a gearbox remap?
Your engine and gearbox are controlled by separate units. The engine ECU handles fuelling, boost and ignition. The transmission control unit, the TCU, manages everything the gearbox does: when it shifts, how fast, how firm, and how much torque it will allow to pass through.
A gearbox remap writes directly to the TCU, adjusting the parameters the manufacturer set for longevity across a broad range of driving conditions and markets. The changes we make typically include:
The result is a gearbox that shifts faster, handles torque more confidently, and responds in a way that matches how the car actually drives.
Why you need a gearbox remap after an engine remap
This is the part most people do not think about until it causes a problem. When you carry out a Stage 1 or Stage 2 engine remap, the engine produces more torque than it did from the factory. The TCU does not know this has happened. It is still operating to its original torque limit, which means one of two things: the gearbox slips as it struggles to cope with torque it was not told to expect, or it simply refuses to let the engine reach its full potential.
Neither outcome is what you want after investing in a remap.
A TCU remap raises the gearbox torque limit to match what the engine is now producing, so the gains from the engine tune are not being capped or worn away by a gearbox still living in stock mode. If you have remapped the engine, updating the gearbox at the same visit is the logical next step.
Gearboxes we work with
We carry out gearbox tuning across a wide range of transmission types. The most common applications we see are:
DSG, Volkswagen's dual-clutch gearbox, fitted across the VAG group including Golf, Audi A3 and S3, Skoda Octavia vRS, and Seat Cupra. The DQ250 and DQ381 are the most frequent. Full DSG remap details.
ZF8, The eight-speed automatic used across BMW's petrol and diesel line-up, including the 3 Series, 5 Series, M340i, and X5. A BMW gearbox remap on the ZF8 transforms the driving experience in a way the engine remap alone cannot replicate.
Other DCT gearboxes, We also work with dual-clutch units fitted to other manufacturers. Contact us to confirm compatibility with your specific vehicle.
If your gearbox type is not listed, call us and we will confirm whether a remap is possible for your car.
One visit, both units updated
The most efficient approach is to book an engine remap and gearbox remap together. Both the ECU and TCU can be updated in a single visit, and because we develop every calibration on our 4WD Bapro dynamometer, the two files are verified against real measured power figures before the car leaves the bay.
Samuel Gunnell leads all calibration work at Manchester Dyno Centre. With over 10 years in automotive software programming, he writes bespoke files for each vehicle rather than loading a generic calibration from a database. That distinction matters when you are asking the gearbox to handle more torque than it left the factory expecting to manage.
Book your gearbox remap
Manchester Dyno Centre is based at HNA Facilities, Plot Zero, James Nasmyth Way, Eccles, Manchester M30 0SF, in Eccles, Manchester. We are straightforward to reach from across Greater Manchester, Salford, Stockport, and further afield.
Pricing varies by gearbox type and vehicle. We do not publish a fixed price list. Call us on 0161 302 5117 to discuss your car and get a quote.