Precision Rebored Throttle Bodies
BMW's TM presented under Fair Use
The BMW throttle bodies can be rebored about 2mm to 4mm oversize from stock, depending on application.
BMW E30 M20 325
BMW E36 M50 325/M3 (OBD I only)
BMW E38 V12 Twin DBW
BMWCCA Club Racecar with the Proflow throttle body: