10-25-2019, 04:11 PM | #1 |
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OPF filter = 0 sound
Just grab my x3m comp today in Portugal and was very upset with the car sound, it's feels like u drive Tesla, not M car!
We already check on elevator and found 2 huge OPF filters. Did this filter exist in USA cars or only in Europe? Can i simple delete it without remap car? |
10-26-2019, 11:33 AM | #3 | |
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Curse the meddling EU ! |
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10-26-2019, 11:38 AM | #4 | |
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10-26-2019, 02:02 PM | #5 | |
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10-26-2019, 02:03 PM | #6 |
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The main problem is - u can't delete OPF filter without reprogramming ECU ( there is backpressure sendor on each downpipe!
So actually all EU cars have only one exit - decat and remap) or deOPF and remap. |
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10-27-2019, 03:15 AM | #7 |
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My car is at the doctor ( exhaust sport specialist ) in north Italy
OPF removal + ECU remap to disable backpressure sensor and other sensor ,but not extra HP just hoping to keep the warranty safe. I decided to keep the OE downpipe . I'm looking just for the right sound and not more power . As soon as my car will be ready I post some video Last edited by acce98; 10-27-2019 at 03:20 AM.. |
10-27-2019, 04:41 AM | #8 | |
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10-27-2019, 04:50 AM | #9 | ||
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I just wondered - I am BMW newbie so just learning about the model range. Nice to see some Euro folks on here trying some modifications on the exhaust. I look forward to hearing the results ! |
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10-27-2019, 06:00 AM | #11 |
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10-27-2019, 06:02 AM | #12 |
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10-27-2019, 06:07 AM | #13 |
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You are right! Supersprint exhaust
They develop it for X3 and now for my X4 . They told me that on the dashboard of the X3 after few km the yellow engine light turned on and they send the car to a ecu specialist to disable the backpressure sensor . |
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10-27-2019, 06:13 AM | #14 | |
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I already have a guy, who can remap the car, even remotly (odb-ethernet cable), he did one of the first m5 st2 (f90). I just waiting to order a good exhaust solution or mb will do custom. The main idea - keep stock catback (there is no reason to delete it), just put straight downpipes without OPF tubes (anyway it will be removed by ECU map), after put a good sport catalyst in current place of OPF filter and connect to stock resonator. That's should be enought. I have m3 f80 with almost all possible tune on the market and was really upset, when i saw no difference between full Akrapovic exhaust (10k$) compare to just 350$ downpipes in power and not a big sound difference. |
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10-27-2019, 06:18 AM | #15 | |
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Ciao...... |
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10-27-2019, 06:36 AM | #16 | |
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10-27-2019, 06:42 AM | #17 |
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This is SS custom full exhaust, in my opinion you don't need to remove silencers and stock catback, if you will put straight decat downpipes and change OPF boxes to sport Catalyst, that nobody will detect the changes in MOT
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10-27-2019, 06:53 AM | #18 |
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Mantova is only an hour from where I live. Let me know how you like the new setup. I'm shipping my F97 back to the states in December but might go down pipe before I leave here if their solution is good.
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10-27-2019, 12:21 PM | #20 | ||||
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From Akrapovic web site M5 ( When installing the Akrapovič Evolution link pipe set, remapping the ECU is mandatory in order to prevent potential "check engine light" warning signals. THIS PRODUCT DOES NOT MEET EMISSION COMPLIANCE REQUIREMENTS FOR STREET OR HIGHWAY USE. ) I'm not a technician, but I think this is the best solution to increase the sound and why not some more HP . |
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10-27-2019, 02:47 PM | #21 |
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10-28-2019, 07:34 AM | #22 |
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From Manhart website:
https://www.manhart-performance.de/s...---x5/x6?c=302 By installing this module you don't need to remap the car . They said that the module for X3/X4 are under develop and it will be ready for the market very soon . |
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