bmw e46 325xi electric solenoid valve in vacuum line

So tuners would frequently upgrade their crankshaft to provide the performance they are looking for, on the street or on the track. Because of this, you were limited to either low end torque or high end power, but it was very difficult to design a crankshaft that provided both. The crankshaft was responsible for spinning gears which spins the cams which controls timing. This is sufficient for normal engine operation as the vacuum level is built up in the vacuum reservoir in each temporary partial load setting of the throttle valve.In early model BMW’s, such as our favorite E30 M3, engine timing adjustments had to be done by hand with a special tool. The volume of the vacuum reservoir is set in such a way that 5 switching operations of the exhaust flap can be carried out in succession with the throttle valve in full load position. The vacuum reservoir is necessary as the M52 B28, M54 B30 and M56 B25 engines only have a very low vacuum in the intake pipe at full load. Electrical activation takes place by means of the DME engine control module after evaluating various input variables: 200 mbar is required to close the exhaust flap. Vacuum from the vacuum accumulator is applied to the vacuum unit and the exhaust flap is closed.Ī minimum vacuum of approx. If the DME control module requires that the exhaust flap is closed, the control module outputs â***8364 ***65533 groundâ***8364 ***65533 and the electric changeover valve is activated. The DME control module actuates an electronic switch-over valve which supplies vacuum to a vacuum unit. The exhaust flap is open (spring force) in idle setting, the vacuum unit is aerated. To realize an active silencer system, the exhaust system was given a controlled electro-pneumatic exhaust flap at the tail pipe of the main silencer.

I would think any intake vacuum port would work Vacuum tank for exhaust flap is fitted underneath starter motor. I don't know how to send a picture but it says.

Bmw e46 325xi electric solenoid valve in vacuum line