Active catless DP
So I've been looking at these since before I had my 135 and now i have the money to do downpipes but how do the Active Autowerkez catless DP compare to other brands like AR or CPE?
08 n54 135i Alpina-AT 93k Miles
Engine: JB4 e40/93, AFE DCI, VRSF 5" FMIC V2, VRSF Upper/Lower CP, BMS Tstat Bypass
Exhaust: Active DP, Berk Ceramic Delete
Tires: Nitto 555 265/35 (30k+ Miles & Still going Somehow), Nitto 555 225/40