The EGR (Exhaust Gas Recirculation) valve on M57 and M47 engines:
The EGR valve is a mandatory emission control device for all diesel vehicles. Some gasoline models are also equipped with this component. Its main role is to redirect exhaust gases to the intake manifold for secondary combustion. This process significantly reduces engine emissions of nitrogen oxides (NOx). However, over time, this valve can become clogged with carbon deposits, resulting in reduced engine performance, increased fuel consumption, and mechanical problems if carbon particles enter the engine.
Why remove the EGR valve?
Because of the way it operates, the EGR valve is subject to rapid fouling caused by carbon deposits (often referred to as "soot"). Over time, these deposits can build up and block the valve, causing problems such as :
- Increased vehicle emissions
- A blocked valve, leading to mechanical failure
- Damage to intake system
- Motor power loss
Removing the EGR valve using a removal kit is a simple solution for restoring optimum engine performance. This removal also offers additional benefits, such as:
Reasons for Removing the EGR Valve :
- Engine performance enhancement Removing the EGR valve can improve air flow to the engine, resulting in better combustion and increased power.
- Reducing Carbon Deposition By removing the EGR system, you avoid the build-up of carbon deposits in the intake manifold and associated components.
- Increased energy efficiency Some users report improved fuel consumption after removing the EGR system.
Compatible with BMW diesel engines: M57 & M47
First phase: M57 & M47 engines:
This EGR valve suppression kit is compatible with BMW diesel models equipped with M57 and M47 engines, including :
BMW 3 Series :
- E46 320d (1998-2001)
- 318d, 330d (1999-2003)
BMW 5 Series :
- E39 520d, 525d (2000-2003)
- 530d (1998-2003)
BMW 7 Series :
- E65 730d (2002-2005)
- E38 730d (1998-2002)
BMW X5 :
E53 30d (2001-2003)
Second phase: M57Tü and M47Tü engines
"Tü" stands for "Technical Update".
This EGR valve suppression kit is compatible with BMW diesel models equipped with M57Tü and M47Tü engines, including :
BMW 1 Series :
- E87 118d, 120d (2004-2007)
BMW 3 Series :
- E46 320d (2001-2006)
- 318d, 330d (2003-2005)
- E90, E91, E92: 318d, 320d (2005-2007), 325d (2006-2008), 330d (2005-2008), 335d (2006-2012)
BMW 5 Series :
- E60 520d (2003-2007)
- 525d, 530d, 535d (2003-2010)
BMW 7 Series :
- E65 730d (2005-2008)
BMW X3 :
- E83 20d (2005-2007)
- 30d, 35d (2003-2010)
BMW X5 :
- E53 30d (2003-2006)
- E70 30d (2007-2010)
How to remove the EGR valve on a BMW M57 & M47 :
Preparation:
- Make sure the engine is cold and disconnect the battery to avoid any electrical problems.
Access the EGR valve :
- Remove the engine cover to expose the EGR valve, usually located at the front of the engine near the intake manifold.
Disconnect components:
- Disconnect the vacuum hose connected to the EGR valve. It is advisable to plug this hose to prevent any vacuum leakage.
- Unscrew and remove the EGR valve from its position.
Install the EGR Removal Kit :
- Replace the removed EGR valve with an EGR suppression kit, which usually includes a bypass tube and the necessary accessories. Make sure all connections are tight to prevent leaks.
Reassemble :
- Refasten all components that have been removed and reconnect the battery.
ECU considerations :
- Some models may require reprogramming of the engine control unit (ECU) to avoid error codes or warning lights after the EGR system has been removed.
If you're concerned about the implications of removing the EGR valve, consider regular cleaning to keep it working properly.
This involves dismantling the valve and using suitable cleaners to remove carbon deposits.
For more information and to purchase your EGR suppression kit for BMW E46, visit Macote.fr.
