Before you buy anything
How it works
Four things worth understanding before you spend money. None of them are sales pages.
The RTD4, and why every DEFI tune arrives on one
The device that carries a finished calibration from our bench to your engine controller — and keeps you connected to us after.
Read →Credits, licensing, and why it is irreversible
A license binds permanently to one engine controller. That single fact is why this sale is final.
Read →Is my ECU locked?
Some controllers are locked. Some of those can be opened. Some cannot be opened by anyone, ever.
Read →Revisions and aftercare
Delivery is not the end of the job. A calibration that has never seen your driving is a first draft.
Read →