New to TT, just purchased.
Has SAI and cat code.
On 1.8T longitudinal and 2.7T, I always remove SAI and EGR/Kombi valve and tune out (together with Evap (remove charcoal tank) and cats (downpipe or piggy pipes).

Anything special on the TT225 regarding these deletes?

EGR block of plate source?
Ebay for downpipe (kit with 3 pieces)?