Removing swirl flaps on BMW

With these sets you can remove the swirl flaps on your BMW - no matter whether it is a 4-cylinder N47 or a 6-cylinder M57.

Why you should remove the swirl flaps on your BMW

The so-called Swirl flaps (Swirl flaps) are found in the intake tract of many BMW diesel engines. They were originally developed to optimize airflow and improve combustion. In practice, however, they have proven to be Vulnerability – especially in the popular BMW 3 Series (E90/E91), 5 Series (E60/E61) and other diesel-powered models.

Typical problems with swirl flaps

With increasing mileage, the swirl flaps can become loose or even break off. The consequences are often serious:

• Engine damage due to broken partsthat enter the combustion chamber
• Loss of performance due to coked or jammed flaps
• Increased repair costsif damage occurs to the intake tract or engine

Advantages of removing the swirl flaps

Many BMW drivers therefore opt for a Swirl flap delete – that is, the removal and use of blind plugs. The advantages are obvious:

• Significantly lower risk for engine damage
• Longer shelf life your engine
• No noticeable disadvantages in normal driving operation
• Often even quieter engine running and fewer problems with the intake manifold

For which BMW models does this make sense?

Removing the swirl flaps is recommended for almost all BMW diesel models from 1998–2016, among others:

• BMW 3 Series E46, E90, E91, E92, E93
• BMW 5 Series E39, E60, E61
• BMW X3, X5

Models with the BMW M57 diesel engine built before 2007 are particularly prone to the breakage of the swirl flaps in the intake manifold. Unfortunately, stories of engine failure are common here... Therefore, removing the swirl caps is mandatory on these models.

Conclusion: Protect your BMW from expensive damage

If you want to enjoy your BMW for a long time, you should Remove swirl flaps in good time or exchange. With our Swirl flap delete kits you get the right solution that is perfectly tailored to your model – tested and proven on our own project cars.

Removing BMW swirl flaps – are there any disadvantages?

Many BMW drivers wonder whether removing the swirl flaps has any disadvantages. The good news: In everyday driving, there are barely noticeable negative effectsOriginally, the flaps were intended to improve airflow at low engine speeds and thus enable cleaner combustion. Removing them can, in rare cases, lead to the following:

• Minimally higher emissions at very low load
• Slightly changed airflow, which is hardly noticeable when driving
• For some few Models must Engine control adjusted be reported when error messages occur

For the For most drivers, the advantages clearly outweigh: The risk of major engine damage is drastically reduced, the service life increases, and there are practically no disadvantages in everyday life. Swirl flap delete one of the most popular preventative measures for BMW diesel engines.