you are talking about the brake ducts, which are supposed to cool the rotors. I havn't had mine for a while and i see no adverse effects. the thing that plugs into the driver's side one is your temp sensor for the obc. just mount it somewhere else away from the engine for accurate readings.
PRESIDENT OF THE OVER 10 YEARS OLD AND UNDER 100K MILES CLUB
1993 325i 5spd
Benfer Performance Intake
M-tech Pedals and Shiftknob
Bavarian Auto Floor Mats
Wheelskin Steering Wheel Cover
Panasonic Head Unit
Euro Projector Lights w/ black Housing
Black Housing Clear Corners
MORE TO COME!!
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