BMW S54, as in the e46 M3, M coupe, and M roadster
3.2 liter Dual VANOS, Individual Throttle Body, 333(US)/338(EU)bhp factory spec.
- Cylinder bore: 87 mm
- Displacement of 3,246 cc
- High pressure Double VANOS continuously variable valve timing system with faster operation at high rpm
- Compression 11.5:1
- Finger-type rocker arms for reduced reciprocating mass and friction
- One-piece aluminum head casting for lighter weight
- Scavenging oil pump to maintain pressure during heavy cornering
VEMS ECU Config:
BMW S54 dual-VANOS engine: VR, HALL, HALL + 4 * PFET high-side switches for the 4 hydraulic cam-actuator solenoids
There are 3 engine speed sensors. One on the crank (VR) and one on each camshaft (Hall). The ECUs need to be ordered with 3 trigger inputs. The ECUs also need to be ordered with 4 PFET high side drivers for the camshaft solenoids since they require switched 12V, not switched GND like traditionally run solenoids.