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BMW 3-Series (E90 E92) Forum
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Looking for US spec swirl flaps
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07-04-2020, 09:27 AM | #1 |
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Looking for US spec swirl flaps
Is there anybody here with removed US spec M57 swirl flaps looking to send to a new home? I'm in the GTA and interested. PM me if you have. Thank you.
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07-04-2020, 03:17 PM | #2 | |
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Quote:
https://www.ebay.com/itm/6x-33MM-Die...EAAOSwOnJdrqe0
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07-04-2020, 07:37 PM | #3 | |
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07-04-2020, 09:01 PM | #4 |
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07-05-2020, 11:23 AM | #5 |
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Oh snap! Sorry i misread your post. I might have some new ones sitting around. Ill private message you if so.
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07-20-2020, 12:30 PM | #9 |
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Interesting. I have a brand new intake manifold and did the swirl flap delete, but have not installed it on the car yet. How are you collecting your data?
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07-20-2020, 08:01 PM | #10 |
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Carly at the moment and soon will use Torque and/or Testo. I just completed a 2.5 hour granny style country drive to the cottage and averaged 32.7 mpg which is off by about 4mpg under nearly identical conditions year over year. Using Carly I watched the Swirl flap target position % bounce around and could see during low rpm doing 100km it calling for swirl flap to open. My goals here are different than many. Love the power but want a complete and efficient burn for every drop of diesel if possible.
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07-22-2020, 09:25 PM | #11 | |
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But they do have a strong correlation to DPF longevity and fuel mileage in mixed driving. I wonder how many of the pre-maturely failed DPFs were running around without swirl flaps? My definition of "strong" in this context may be a little different than most. Good luck validating that claim. |
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08-02-2020, 02:48 AM | #14 |
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IMO those flaps have a poor design as the shafts are bearing on the plastic manifold.
At 75,000 mine wore the plastic and leaked from the seals behind faulting the glow plug controller. The remedy was to press in small bearings behind the seal to support the shafts. |
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