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11-29-2019, 03:24 PM | #1 |
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Garage List E86 Z4 M [10.00]
F15 X5 xDrive35i [9.17] F10 550i (Retired) [9.17] F25 X3 xDrive35i (R ... [9.43] E82 135is (Retired) [9.53] E85 Z4 M (Retired) [9.41] E90 328i xDrive (Re ... [9.25] E86 Z4 3.0si (Retired) [8.93] |
No CEL with DKF 100 cell HFC!
Just like the title says, I swapped out my 300 cell cat for the 100 cell and happy to report no CEL or codes. The one minor thing I did however was adding a pair of o2 spacers. So I can’t tell you if it’s needed or not but for the $15, may as well throw them on so you don’t have to get under the car twice.
Last edited by 3002 tii; 11-29-2019 at 04:54 PM.. |
11-30-2019, 12:41 AM | #2 |
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Very nice man. Weird though how my CEL came on after 3 starts with DKF’s 300 cell cats. Switching those out to resonators once the car is out the shop.
Did you feel/hear any difference going from 300 to 100? |
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11-30-2019, 02:14 AM | #3 | |
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Garage List E86 Z4 M [10.00]
F15 X5 xDrive35i [9.17] F10 550i (Retired) [9.17] F25 X3 xDrive35i (R ... [9.43] E82 135is (Retired) [9.53] E85 Z4 M (Retired) [9.41] E90 328i xDrive (Re ... [9.25] E86 Z4 3.0si (Retired) [8.93] |
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Yea very noticeable difference... |
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11-30-2019, 08:18 AM | #4 |
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hi there, my car came with DFK cats, which I don’t know if it is 100 or 300, but since my car is a road fun weekend car The foul smell is driving me nuts, are you noticing much difference in terms of smell between the two? I am actually removing the DFK and install a euro set of cats
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11-30-2019, 08:35 AM | #5 | |
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Drives: Z4 M, X5, GX460
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Garage List E86 Z4 M [10.00]
F15 X5 xDrive35i [9.17] F10 550i (Retired) [9.17] F25 X3 xDrive35i (R ... [9.43] E82 135is (Retired) [9.53] E85 Z4 M (Retired) [9.41] E90 328i xDrive (Re ... [9.25] E86 Z4 3.0si (Retired) [8.93] |
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11-30-2019, 10:37 AM | #6 |
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11-30-2019, 10:44 AM | #7 |
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Drives: Z4 M, X5, GX460
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Garage List E86 Z4 M [10.00]
F15 X5 xDrive35i [9.17] F10 550i (Retired) [9.17] F25 X3 xDrive35i (R ... [9.43] E82 135is (Retired) [9.53] E85 Z4 M (Retired) [9.41] E90 328i xDrive (Re ... [9.25] E86 Z4 3.0si (Retired) [8.93] |
I have Euro headers too... you sure you don't have a leak? Did you use new gaskets?
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12-05-2019, 09:22 AM | #9 |
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Garage List E86 Z4 M [10.00]
F15 X5 xDrive35i [9.17] F10 550i (Retired) [9.17] F25 X3 xDrive35i (R ... [9.43] E82 135is (Retired) [9.53] E85 Z4 M (Retired) [9.41] E90 328i xDrive (Re ... [9.25] E86 Z4 3.0si (Retired) [8.93] |
Honestly so many to choose from on eBay but I just filtered for stainless and located within USA. Some have more restrictive opening than others so you may need to play around with that. I used the 2nd one...
https://www.ebay.com/itm/Oxygen-O2-S...YAAOSwyC1dyi6o https://www.ebay.com/itm/Oxygen-O2-S...wAAOSwRY1dup7U |
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12-05-2019, 09:27 AM | #10 |
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I just wanted to make sure I get the right thread size and pitch. Not sure how much variability there exists in o2 sensor threads but now I can buy that with zero research. Thank you!
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12-05-2019, 10:20 AM | #11 |
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Garage List E86 Z4 M [10.00]
F15 X5 xDrive35i [9.17] F10 550i (Retired) [9.17] F25 X3 xDrive35i (R ... [9.43] E82 135is (Retired) [9.53] E85 Z4 M (Retired) [9.41] E90 328i xDrive (Re ... [9.25] E86 Z4 3.0si (Retired) [8.93] |
It’s a standard fitting, they’re all the same
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12-09-2019, 09:24 PM | #12 | |
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I'd estimate 75% of the fumes are removed with 100 cell cats. 300 cell remove 90-95% of the fumes. Check for leaks by looking for black "burn marks" on the exhaust near the connections, especially around the v-bands. You can also run your hands near the exhaust on cold start, feeling for leaks. Be careful; the exhaust heats up quickly, so don't physically touch anything. Start from the headers and work your way backwards towards the mufflers. Don't take longer than 10-15 seconds to feel for leaks, because the exhaust will get too hot.
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12-12-2019, 11:34 AM | #13 |
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thanks for the photos, I am taking mine out next January to install the EU section 1, with global warming is my fair share to not modify the car in a way that is more harmful =P
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