I couldn't resist.
The 4 has now had the DPs completely de-catted.
A QST/Scorpion Cat-Back system has been put on.
A Stage 2 map has been applied.
Firstly, it sounds like a bleedin' race car! Went out of my way to go through a tunnel (twice) just to hear it 'properly' - awesome. A bit tiresome on a long cruise though.
Secondly, this things literally flies now. Supposedly good for c450-460bhp. Will be checking it out on the Chip N Spin day next month to see.
Just need to get the stone chips sorted on the bonnet now...