A TVA off disables the throttle/anti-shudder valve that closes at engine shut-off on some diesels. Used when the throttle valve actuator fails, causing rough shut-down or fault codes.
For workshops
With MasterTuning you request the file, we produce it custom to the vehicle, and you flash it back — no in-house tuning required. You keep the customer and the margin.
FAQ
What is the TVA?
The intake throttle/anti-shudder valve used for smooth engine shut-off and EGR flow.
Why disable it?
When it fails it causes shut-down shudder and faults; disabling removes the issue.
Offer this to your customers: find the vehicle or contact MasterTuning for a custom file.
