just bought a 2018 DETA 2.0 TDI A5. does anyone know if it injects the adblue into the DPF like on the newer B9.5 3.0 or if it injects after the DPF?

just curious as a friend with a B9.5 3.0 TDI was told by a tuner to leave the adblue in as it helped clean the DPF, i was sceptical but when i found the adblue system diagram from Audi showing it had a twindose system i could see an injector in front of the DPF.

Twin dosing in the 3.0 TDI | Audi MediaCenter

https://www.audi-mediacenter.com/en/...-3-0-tdi-97128