Originally Posted by chiefsotos
Completely pointless mod. You just ruined your stock air box. You should expect some gains if you followed the Mr 5 custom intake, but with this, there is no change of getting any better flow.
If I was already running 400BHP I woud argee the air box is already at it's limits, but I am not at that level yet and a bit of extra cold air being "forced" in can only be a +. Also it does feel better.
I understand there are better options out there, but this does work for my car which runs just below 350BHP before I did this. I will be back on the Dyno soon.
Also the airbox has not been touched at all. I purchassed a new intake plenum to "play" with and it was only £37 ($53) so I can go back to "stock" easilly.
When I got the new Intake plenum I noticed it is not sealed very well and leaks all over the place, so I sealed all the leaks.....maybe this helped the performance...whatever it was though my car is better now.
335d M Sport Coupe (2010) Titanium Silver:- 19 inch Wheels, DAB, Memory Seats, Prof Sat Nav, Sunroof, BMW Performance Carbon Fibre:- Boot Spoiler, Mirrors and Front Lip Splitter, SSDD Carbon Fibre Rear Diffuser, Roof Spoiler, Black Kidney Grills, 12.5mm Eibach Spacers x4, Red Calpiers, CKS Custom Exhaust, Wagner FMIC, ITG Air Filter, Sprint Booster, DMS 380BHP / 600 Ft lbs Remap, Quaife LSD, Weicher front & rear strut brace