the money it'd cost to install those things...you'd never make it up with the mileage increase. i'd mod the car anyways.
_.[In a love/hate relationship with...] E92 335i: Space Grey|Coral Red|Aluminum Trim
_________VMR V710s|M-Sport Rear Bumper & Rockers|M3 Spoiler|Golf-T__________Moved on to the misc. Later, brahs.