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BMW E46 325XI ELECTRIC SOLENOID VALVE IN VACUUM LINE HOW TO
Then, in order to understand how to send a signal from DME to the solenoid valve, I started looking at E-sys, and in the DME settings I found 3 settings that, in their name, are related to the exhaust valves:Ĭomment: Abgasklappe - (AGK) Konfiguration How flaps are opened/closed depending on the gear and engine speed (always the same for all F-series BMWs with a vacuum valves):Ĭonclusion: my DME F10 n55 module will can give a signal to open the flaps for sure! But it needed only to CODE it correctly! I have connected the solenoid valve according to the circuit diagram from Rheingold: one pin to the power supply through a fuse, and the other pin to the signal from DME (pin #3 in the connector A211*1B), see photo below. the solenoid valve is controlled by the DME engine module, it gives a signal to open the flaps, depending on the gear, rpm and engine load.Īfter studying how it works on other BMWs with the same N55 engine and the same DME engine module, I found it is the same! And not only with the N55, with other engines, where there are vacuum (not electric) valves, the principle of operation is the same everywhere! For example, in the X3 F25 with the N55 engine and the same DME there is a mufflers with a vacuum valves and its algorithm and the electrical valve connection circuit in the trunk to the DME under the hood, exactly the same as the M5. vacuum through the tube comes from the engine in the trunk and there it is connected to the solenoid valve, this solenoid is controlling the vacuum valves on the silencers Stock 535i does not have vacuum control for exhaust but I really want the flaps to work as intended by BMW! On the new M5 mufflers there are vacuum valves. I have the car BMW 535i N55 with installed exhaust from the M5.