12-26-2018, 06:24 AM | #1 |
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320i exhaust valve retrofit questions
Hello everyone,
I have changed my 320i stock exhaust to 335i exhaust with the electrical exhaust flap. For reference, the flap system is described in https://www.newtis.info/tisv2/a/en/f...ystem/Im2GgsKi While it sounds amazing with catted Wagner DP, I would like to utilize the flap feature in comfort and eco modes. I have BM3, which provides flap control parameters in the config. That leads me to believe that the BM3 Stage 2 software in DME may be able to control a flap even in 320i. I inspected my current DME wiring, and it seems that the flap control pin is unpopulated in the DME connector A46*1B, so cabling needs to be added. I have a few questions about it. 1. Has anyone attempted this? 2. Does anybody have any idea which BMW part number is the spare socket contact for the A46*1B DME connector? My plan is to buy a socket contact, inspect the output signal with an oscilloscope and if it seems valid, run wiring to the back of the car. I can get 12v from the rear fuse box and ground from some nearest GND tap. Here is the A46*1B connector view: https://www.newtis.info/tisv2/a/en/f...e-lim/GPcd24w9 And here wiring for the exhaust flap: https://www.newtis.info/tisv2/a/en/f...ystem/GS1zpZLe Thanks for any input! BMW part number or any other ideas for getting my hands on spare DME socket contact would be greatly appreciated! |
12-26-2018, 12:54 PM | #2 | |
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07-11-2019, 12:56 PM | #3 |
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Drives: G05 X5 xDrive40i Msport
Join Date: Jan 2018
Location: Chattanooga, TN
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320i Exhaust Valve Install
Were you able to find anything out? Successful install?
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12-08-2021, 04:37 PM | #5 |
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Just had a look at this, looks like the exhaust flap runs from the foot pedal for signal (open-close) dependent on revs, then power and ground. Still unsure how the different driving modes affect the flap, but I guess this could be due to this affecting pedal-throttle response (sharpness)
I may look into this more as going to put a 328i backbox onto my 320i and would like to use the flap. Other option would be a remote switch to just open or close it. Interested to know if OP ever got anywhere with this |
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03-18-2023, 11:23 AM | #7 |
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Reviving an old thread.
Did anyone manage to do this? I have a b48 320i with a 335i mpe and i really want to make the flap work. I can provide a wire from the dme and 12v and ground to the flap. But i just don’t want to go through all this hassle if it won’t work. |
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320i, electrical, exhaust, flap, retrofit |
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