[Pep423]

Iv been deleted for about a month and noticed about .5mpg less than before.

[seeBackslash]

@GodStang: What did you use to clean your intake?

[PURE340i]

Reviving a old thread. Can the swirls be deleted without any sort of check engine light or does it have to be programmed inside a flash tune?

[robnitro]

Don't need a tune, but some have reported that their dpf does more frequent regen after removing flaps because of a bit more soot is made without flaps at low loads/idle.

[napeHbNYC]

Sorry to bring this back but do you need to put a golf T or anything to plug the vacuum line that operates the flaps?

[RL18]

Originally Posted by napeHbNYC

Sorry to bring this back but do you need to put a golf T or anything to plug the vacuum line that operates the flaps?

Swirlflap is electronically actuated.

[napeHbNYC]

Originally Posted by RL18

Swirlflap is electronically actuated.

So no vacuum? And it won’t throw a light, correct?

Thank you for your response.

[RL18]

Originally Posted by napeHbNYC

So no vacuum? And it won’t throw a light, correct?

Thank you for your response.

As far as I know it won't know the difference. Just leave the module plugged in and remove the metal rod that connects to the flaps.

[napeHbNYC]

Originally Posted by RL18

As far as I know it won't know the difference. Just leave the module plugged in and remove the metal rod that connects to the flaps.

Thank you 🙏

[DougNBodie]

What about any loss of power/torque from doing the swirl flaps?

[DougNBodie]

Originally Posted by RL18

As far as I know it won't know the difference. Just leave the module plugged in and remove the metal rod that connects to the flaps.

This might sound stupid.....But why not just spot weld the screws on the swirl flaps so that they never come off? wouldn't that fix the whole swirl flap issue?

[RL18]

Originally Posted by DougNBodie

This might sound stupid.....But why not just spot weld the screws on the swirl flaps so that they never come off? wouldn't that fix the whole swirl flap issue?

The problem with the swirl flap is the "flap" breaking and getting eaten by the engine. It's not a known issue with our m57 in the US but I've heard It was a issue with some earlier European spec m57s. So you just install blanks in place of the flap portion and disconnect the rod that that moves the flaps open/closed. Also sometimes they leak boost or stop working because of carbon buildup. Just gets rid of another possible failure point.

[DougNBodie]

Anyone in California have issues with M57 swirl flaps post 2008? I talked to several All German mechanics in Newport Beach and they all said leave it alone, there is no issue.

[Nadir Point]

Originally Posted by DougNBodie

Anyone in California have issues with M57 swirl flaps post 2008? I talked to several All German mechanics in Newport Beach and they all said leave it alone, there is no issue.

140k miles on my all-stock (except for the running code and exhaust) drive-train. It still has the factory-installed belts.

[PURE340i]

Originally Posted by DougNBodie

Anyone in California have issues with M57 swirl flaps post 2008? I talked to several All German mechanics in Newport Beach and they all said leave it alone, there is no issue.

I just hit 189k and my swirl flaps are still in place.

[Nadir Point]

Mechanical shyt breaks. Sometimes it's a total disaster for unlucky owners, like the Cummins KDP fiasco. Is there any data on just how many swirl flaps malfunctioned in a spectacular way, pointing to a reliability measure of any sort? Doubful, but I'm listening... What I have seen more than a few times tho, is people in message-boards and social media fixing imaginary problems because somebody said it was good idea.

Information has a tendency to spread quickly and widely these days, regardless of it's veracity.

[robnitro]

In some forum a guy in Finland saw his regenerations happen more without the flaps. They help idle conditions to reduce soot. If you don't have a dpf, you won't see a benefit to them.