Interesting to hear, from what you hear on here your led to believe you get nothing but fresh air out the exhaust with the AHM treatment
Hope your enjoying the Audi mate
I was considering having the DPF reinstated as the difference with and without was dramatic ! Trouble was it drove so nice I couldn't decide whether the performance drop or smoke was the bigger issue. Hence I left it alone.
Re the Audi I loved my Ti but the S5 is whole different car. Fitted a Milltek exhaust now and the V8 burble is immense !