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?
11' 335d 74k Miles - K&N Drop In
08' n54 135i Alpina-AT 107k Miles - SOLD
Engine: JB4 e40/93, AFE DCI, VRSF 5" FMIC V2, VRSF Upper/Lower CP, BMS Tstat Bypass
Exhaust: Active DP, Berk Ceramic Delete