Is the current 335d EGR system like the older european e46d systems? The valve in the EGR only opens at low speed (vacuum pressure) and closed as RPMs and pressure increase...? Which explains why it really is better to rev and drive spiritedly.
If that's the case and its vacuum operated, can we just plug it up to keep the valve closed?
DieselDiner: I'd be thoroughly interested in a coding option or EGR delete! What tool are you using for your coding? I'll be picking up my 335d in 2-3 weeks and would like to be able to code too.