TMPS Retrofit

[M-A8]

Guys, I've just read that 4F0 sensors were SUPERSEDED by 7PP ones, which means that what I was telling myself earlier on in my head is actually true and that is:

7PP is exactly same sensor, just a newer versions of the ones fitted on A8s and A6s. As the technology moved on they became cheaper, 10 years later down the line, and Audi, as they do, they will still charge A8 owners premium money for the same sensors they sell to A4 owners (new A4 models) for much less money because a lot of guys will go to Audi and they won't buy any other part than what ETKA says which starts with 4E0
4E0 = lets charge moooooore because we are greedy
Which is very true because S8 fog lights are 100 each and they are A6 fog lights but 4E0 fog lights costs £100 where 4F0 only £50 !!! Same light !!!

Am I talking s**t here or this is exactly what this is??? And 7PP sensor will work exactly as the A8 ones fitted 10 years ago as it also is 433MHz and also its still a bloody pressure sensor and ECU and aerials do the rest of the work by ECU lowering the strength of the aerials hence A8 has reading for each wheel???

Any one seen TPMS on MMI screen on the A6, is it divided into 4 readings (4 wheels) or there is even no graphics just a warning on the dash when pressure on one or more wheels drops ???