GAD Tuning

Bespoke ECU Remapping

GAD WT4 Remote & Switchable Remapping


Legacy product information

The WT4 appeared in GAD Tuning's earlier range of remote and switchable-remapping products. This page preserves information about that system for existing owners and people researching it. Please contact us to establish what can be supported for your particular unit and vehicle.

What the original WT4 system described


The original WT4 write-up described a handheld system for transferring vehicle software and choosing between stored calibrations. It referred to retaining factory software alongside alternative files developed for a particular vehicle. Those descriptions relate to the earlier product and are not a statement of present-day supply or compatibility.

A stored calibration needs to match the vehicle, its ECU software and its hardware configuration. A file supplied for a previous specification should not be assumed suitable after further mechanical changes or an ECU software update.

Enquiries about an existing WT4


Send the unit identification, vehicle registration or model details, and a description of the software currently installed. Mention any dashboard warnings, subsequent vehicle modifications or manufacturer software updates. We can then discuss the enquiry without assuming that every older unit or stored file can be supported.

For a new tuning enquiry, tell us the result you are looking for rather than selecting a historical product package. GAD Tuning's current business is primarily mobile vehicle tuning, with arrangements assessed for the work required.

Related information


Talk to GAD Tuning


Send us your vehicle's make, model, year, engine, gearbox and postcode, together with any modifications or existing faults. We will discuss your enquiry and confirm the appropriate next step.

Discuss your vehicle