|
|
|
|
|
|
BMW Garage | BMW Meets | Register | Search | Today's Posts | Mark Forums Read |
|
BMW 3-Series (E90 E92) Forum
>
Swirl Flap removal ???
|
|
07-20-2020, 05:15 PM | #1 |
New Member
8
Rep 28
Posts |
Swirl Flap removal ???
There's so much on the internet about swirl flap removal for the n47 I'm now very confused as to what to do.
My understanding is that the N47 isn't as prone to swirl flap failure compared to the older engines however the issue with these is the brass rod snapping. From what I've read there are very mixed opinions on performance post removal, low down specifically. To me it seems that those with the 3.0l don't notice any power loss but those with the 2.0l do. Am I right in saying that on the early N47s once you remove the flaps there's no going back and you'll have to buy a new manifold of you want them back ? Anyone able to give an estimate of the cost of a new intake manifold from BMW main dealer ? |
07-28-2020, 03:44 PM | #2 |
Boss
0
Rep 10
Posts
Drives: E92 320D M Sport Coupè 2008
Join Date: Feb 2013
Location: Italy
|
here is what you can do. just open your intake and check it yourself. if you have more than 130k on it, i bet that is already broken. just go to amazon and buy yourself the kit for the removal is only like 20 euros. you dont really want to buy an intake manifold specially from BMW they will make you pay at least 500 euros for that junk and after some time it will just break again.
i noticed my car, was weak, no responsive and when i finally went on the hunt for the problem my problem was that the swirl flap weren't working. the stick that open them was broken and didn't open them at all, in fact only 2 holes out of 8 were open. now that i did that removal my car went back to be alive Last edited by Banginpadr; 08-01-2020 at 02:05 PM.. |
Appreciate
0
|
07-28-2020, 04:16 PM | #3 |
Lieutenant
418
Rep 411
Posts |
Buy a 2nd hand Intake manifold.
Clean and mod it, and fit it. Seen them go from £40 to £150
__________________
Help yourself Software part II, read post 1 : https://www.e90post.com/forums/showt...7#post27890067
|
Appreciate
0
|
07-28-2020, 04:34 PM | #4 |
Boss
0
Rep 10
Posts
Drives: E92 320D M Sport Coupè 2008
Join Date: Feb 2013
Location: Italy
|
dont misguide him, is not worth it. why would you spend money to buy an 2nd hand item that already have problems from the start? the stick holding and opening the flaps is made of copper and eventually it will just break
Last edited by Banginpadr; 08-01-2020 at 02:06 PM.. |
Appreciate
0
|
07-30-2020, 03:02 PM | #5 |
Brigadier General
3154
Rep 4,006
Posts |
He's not suggesting keeping the flaps; he's suggesting buying a second manifold so the OP can continue to use their car while they get the 'new' one clean and remove the flaps.
Anyhow, I'm in the minority here who think that flaps should stay in. And EGR, and DPF, too. They're all in there to do specific jobs, which they do well. Just because you may not notice a difference, doesn't mean that there isn't a difference. For example, the swirl flaps contribute to clean running at low rpm; remove them, and you'll find that the DPF regens more often. Correspondingly you'll also find that fuel consumption increases a bit and low end driveability worsens - the latter mainly being noticeable on manual cars. But I do agree that it's super frustrating not to be able to rebuild what you already have. There are cheaper 3rd party manifolds available, but I have no idea whether to trust them or not... |
Appreciate
2
J0K3R5418.00 Chappers 715808.00 |
07-30-2020, 08:12 PM | #7 |
New Member
8
Rep 28
Posts |
|
Appreciate
0
|
07-31-2020, 01:08 AM | #8 |
Brigadier General
3154
Rep 4,006
Posts |
Yeah it probably would.
Yes, I've seen those on eBay too. I asked them how the swirl flaps were 'reinforced' (or whatever the listing said), and their reply was 'they're metal'.......cool, so were the original BMW ones with higher failure rates! You can get vaico or Metzger branded ones on autodoc probably, for similar money... Again, I've never seen any review for them. |
Appreciate
0
|
07-31-2020, 06:45 AM | #9 | |
Boss
0
Rep 10
Posts
Drives: E92 320D M Sport Coupè 2008
Join Date: Feb 2013
Location: Italy
|
Quote:
bro, you really know nothing about these cars and how they work. " he's suggesting buying a second manifold so the OP can continue to use their car while they get the 'new' one clean and remove the flaps" and this here is the evidence. all you have to do is uninstall the intake clean it, install again, and you good to go. a 20 minute job top and that time is only to clean it well. "remove them, and you'll find that the DPF regens more often. Correspondingly you'll also find that fuel consumption increases a bit and low end driveability worsens" how you even pass judgement on something you dont know? had you done this to your car to know this? because i did and this is not true. if anything is the opposite. if people delete the dpf, egr, swirls in these cars it must be a reason for it. |
|
Appreciate
0
|
07-31-2020, 12:41 PM | #10 |
Brigadier General
3154
Rep 4,006
Posts |
So BMW put these systems on their engines to...make them worse??
If you can clean the baked on carbon shit out of your manifold in 20mins, you need to share your secret! Plenty of people send their manifolds off to be ultrasonically cleaned, which normally involves an overnight soak in degreaser before ultrasonically cleaning. Never mind walnut blasting the cyl head ports (yes simpler ways are possible, but they are also very time consuming)... If anything you are showing your ignorance. Whichever way, I don't care for getting into arguments with strangers using a device which has the ability to access pretty much the entirety of all human knowledge. You do you, I'll do me, and the OP can decide for himself. Last edited by Tambohamilton; 08-01-2020 at 02:10 AM.. |
Appreciate
1
J0K3R5418.00 |
08-01-2020, 12:07 AM | #11 |
Colonel
246
Rep 2,025
Posts |
plenty of cleaners out there..even mr muscle works,,as said..take manifold off and egr etc,,clean as best you can,,can even replace the flaps and i would deffo replace the gaskets,,have a look at XR8 on e bay quality gaskets and blanks,,,not cheap rubber etc
|
Appreciate
0
|
08-01-2020, 01:47 PM | #13 | |
Boss
0
Rep 10
Posts
Drives: E92 320D M Sport Coupè 2008
Join Date: Feb 2013
Location: Italy
|
Quote:
why are you responding to my questions with dumb stupid questions? sure bmw put them there for a reason. but that doesn't mean that in the end is for our interest. just as Apple be rolling out Updates for our phones but everyone knows that at every update your phone just keep getting worst not better. so stop being this fcking stupid. you just don't know what you are talking about and are here giving advice on stuff you had never done your self or to your car. this is why i asked you if you had done this before, because i already knew the answer. if you didn't care as you are saying you wouldn't be here still trying to show others you know what you are talking about when in reality you don't and are just looking stupid |
|
Appreciate
0
|
08-01-2020, 01:54 PM | #14 | |
Boss
0
Rep 10
Posts
Drives: E92 320D M Sport Coupè 2008
Join Date: Feb 2013
Location: Italy
|
Quote:
just as you just gave him more info on what i had been saying here and he still asking you where to get the flaps replecements Last edited by Banginpadr; 08-01-2020 at 02:02 PM.. |
|
Appreciate
0
|
08-01-2020, 02:26 PM | #15 | |
Boss
0
Rep 10
Posts
Drives: E92 320D M Sport Coupè 2008
Join Date: Feb 2013
Location: Italy
|
Quote:
when i didn't have a person give me the same advice i'm giving to you, i went and wasted 350 dollars to fix the low end power lost, just as you mentioned here(because when these are broken you car will feel weak and not as strong as it used to be) what happened? well, since the problem was that my intake was broken my car was wasting diesel almost at a M3 rate. i got tired of this and decide to remap it again to stock, which was another 300 dollars to remove the remap. just because i was thinking that it was the remap making my car waste this much diesel. long story short i burned 650 plus 50 euros for something that was worth 20 minute of my time and a 20 euros kit to fix. |
|
Appreciate
0
|
08-01-2020, 07:23 PM | #17 |
Boss
0
Rep 10
Posts
Drives: E92 320D M Sport Coupè 2008
Join Date: Feb 2013
Location: Italy
|
|
Appreciate
0
|
08-02-2020, 04:35 AM | #19 |
Second Lieutenant
34
Rep 186
Posts |
|
Appreciate
0
|
08-02-2020, 04:45 AM | #20 |
Colonel
246
Rep 2,025
Posts |
|
Appreciate
0
|
08-02-2020, 01:09 PM | #21 |
Brigadier General
3154
Rep 4,006
Posts |
|
Appreciate
0
|
08-02-2020, 05:22 PM | #22 |
Private
13
Rep 81
Posts |
When i bought my car the flaps had already been removed, the best i could do to replace them was to buy some second hand one’s and make sure they were in good condition before i fitted them.
|
Appreciate
0
|
Bookmarks |
Thread Tools | Search this Thread |
|
|