Build a picture of the car as it is today
A registration tells us the original vehicle specification. It does not tell us whether an intercooler, turbocharger, intake or fuel-system component has been changed since. List the fitted parts, their make or part number where known, and the fuel you normally use. Say which items were present when the current calibration was installed.
If the previous owner described the car as Stage 1 or Stage 2, include that information as history. The label alone cannot confirm the software, hardware or present condition. An invoice, tuner name and dated dyno report are more useful than an advertised power figure.
Describe the symptom before choosing another remap
Tell us whether the concern is hesitation, inconsistent boost, smoke, an engine warning, clutch behaviour or simply uncertainty about the current tune. Record whether it happens with a cold or warm engine, during a gear change or at a particular engine speed. Describe what you have already noticed; you do not need to repeat a fault deliberately.
A warning code and its description can help the workshop plan an investigation. A code names a condition detected by a controller; it does not by itself prove which component needs replacing. Include earlier repairs and whether the behaviour changed afterwards.
Choose the question the appointment should answer
| Your question | What to discuss |
|---|---|
| What output does the car currently produce? | A suitable power measurement, with the drivetrain and condition confirmed first. |
| Why does it hesitate or enter limp mode? | A diagnostic appointment and any appropriate testing, rather than assuming new software is the repair. |
| Does the calibration match new hardware? | A hardware review and a custom tuning brief, including the existing software history. |
Bring a dyno sheet with its context
A previous report is useful even if it came from another workshop. Bring the whole sheet, its date and any notes on fuel or fitted parts. It provides history for the discussion; it is not a guarantee that a later test will reproduce the same peak value. Ask what a proposed comparison can establish before booking.
Prepare a Caerphilly enquiry
- Registration, engine, gearbox and drivetrain.
- Current hardware and fuel, plus changes made after the last tune.
- Previous tuner, invoice, software details or dyno sheet if available.
- Symptoms, warning messages and repairs already attempted.
- The question you want answered and how the car is normally used.
Use custom tuning for the build discussion, dyno testing for measurement enquiries and gearbox tuning when the engine and transmission need considering together. Customers from Caerphilly, Bedwas and the surrounding valleys can send the brief before arranging a visit.
Can you tell if a car is mapped from its power figure?
A power figure alone cannot identify the installed calibration. Supply the history and vehicle details so the workshop can explain the checks available for that ECU.
Do I need every modification part number?
Send what you have. Photos of invoices or the hardware specification can help clarify an uncertain build. Tell us which details are unknown.
Mobile Stage 1 and ECU solutions, or workshop chassis dyno tuning