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jkoljo · 12-26-2018, 06:24 AM

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, 06:24 AM	#1
jkoljo Private 58 Rep 77 Posts Drives: M235i Join Date: Sep 2018 Location: CA & Finland iTrader: (0)	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 A461B, 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 A461B 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!
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