I think I'm definitely going the drop in filter route. Does anyone have experience with the UUC/Corsa unit? The price seems right and I had a positive experience on my F150. How does the Eibachs's affect ride quality?
E90 M3 Jerez Black/Bamboo Beige 6MT - BMW CCA
Dinan Rear Exhaust, Secondary Cat Delete, Dinan High Flow Carbon Fiber Intake, IND Painted Reflectors, BMW Edition Grills