I am very happy with the exhaust. there is a deffinate "sporty" sound to it now when its booted. With the windows open it sounds great too...for a diesel. Definately go cat baqck, straight though with no boxes at all....yours will be lounder than mine as you have the DPF delete. Doesn't the oild in the ITG filter clogg up the Maf or summit ??? I keep wanting to change my air filter as I have to clean out the box once per month !!!
335d MSport Coupe LCI:- 19" Apex EC-7's (8.5j ET35/9.5j ET33) Factory fitted Sunroof, BMW Perf Carbon Fibre:- Boot Spoiler, Mirrors & Front Lip Splitter, SSDD Carbon Fibre Rear Diffuser, Roof Spoiler, Black Kidney Grills, Red Calpiers, CKS Custom Exhaust, Wagner FMIC, ITG Air Filter, Sprint Booster, Quaife LSD, Weicher front & rear strut brace, Forge charge pipe