Confirm the application and software
Send the registration, engine and actual transmission identification. A ZF badge or model family does not establish the tuning route. Include any replacement-controller work, previous TCU tune and dealer software updates.
Supported xHP or other transmission-calibration options are considered for the exact application. We do not assume every ZF gearbox in every vehicle has the same access or features. The team checks the required route before agreeing the work.
Separate engine stages from gearbox stages
An engine Stage 1 describes an engine-calibration scope. A gearbox Stage 1, 2 or 3 describes that transmission product’s behaviour. The two stage numbers do not need to match automatically. Describe your desired road behaviour rather than selecting a number by habit.
Where xHP is the agreed route, available map descriptions and vehicle support guide the choice. Shift schedules, response and torque handling are considered alongside the engine tune. Features can differ by transmission and application.
Bring the maintenance and symptom history
Share mileage, service history, fault codes and any slip, vibration, harsh change or delayed selection. Distinguish a longstanding preference from a new symptom. A tune should not be the first response to a fault that requires repair.
Record the current engine calibration and any measured or estimated output. The engine and transmission need a coherent brief, but a software change does not establish mechanical capacity or undo wear.
Plan the quote and handover
Ask for engine and gearbox work in one enquiry if both are required. The quotation confirms support, the agreed calibration scope and any additional checks or access. Some applications need a different appointment route from a simple mobile visit.
Follow the application-specific handover instructions. Do not assume a generic reset or adaptation procedure is required after every software change. If behaviour is unexpected, record when it happens and contact the team with the scan and service history.