TPMS retrofit A6 C7.5

So I need to wire transmitters and holders down to each wheel? That means a lot of things have to be taken of, like all the platic trims around the bottom of the door, etc?
The passive TPMS system, uses abs sensor to compare tyre rotation variance, was standard fit to cars in the UK. To upgrade to this system may be possible via making some changes to the coding using VCDS/OBDeleven or similar since there is no hardware involved

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