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      12-26-2018, 06:24 AM   #1
jkoljo
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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!
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      12-26-2018, 12:54 PM   #2
Jhnblckwood
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Quote:
Originally Posted by jkoljo View Post
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!
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      07-11-2019, 12:56 PM   #3
ksla92
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320i Exhaust Valve Install

Were you able to find anything out? Successful install?
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