Something is not right...... That is the main reason you should have returned it. Maybe also check the install. I suppose if it is not snug in the silicon holders it would vibrate. I have never heard an E93 with mods so I can't say if it is normal. I can say I have no annoying drone. And I have freer flow front section too.
Originally Posted by Doru in Romania
man i believe you but mine drones so bad that feel a kind of pressure in my ears with top down at idle and then when cruising. exactly, it's a resonance. also feel a vibration in all car that goes to the steering wheel as well. maybe something not tighen properly when installing? or those bad welds i have make the damn thing to vibrate?
2009 Space Gray Carbon Leather E90 with DCT, Tech package, and EPS. Mods: Fabspeed 200 cell cats, Xpipe w/resonators and no secondary cats, BPM tune, Euro DCT software, Eisenmann Sport Mufflers, Vorsteiner Rear Diffuser II, SWS8 subs, JL Audio XD400 bridged 2X200W, built in radar