Will Dahler fix my drone?

TheProdigy · 07-19-2023, 02:59 PM

Currently have the AA rear section with AA single midpipe. Annoying drone 1800-2k rpm anytime I’m on the freeway. Wondering if anyone knows if the valves remain open/closed at the 1800-2k range when driving in comfort. Is the Dahler a viable solution to make the cabin quiet?

chris3g · 07-19-2023, 03:07 PM

no it wont help you, the valves are already fully closed cruising in efficient mode.

BIGW0RM · 07-19-2023, 03:13 PM

Quote:

Originally Posted by chris3g

no it wont help you, the valves are already fully closed cruising in efficient mode.

You sure about that? I seem to think they open up around 3K in efficient mode.

chris3g · 07-19-2023, 03:19 PM

Quote:

Originally Posted by BIGW0RM

You sure about that? I seem to think they open up around 3K in efficient mode.

they will open partially in efficient mode if you apply sufficient throttle but cruising they are closed, just casually driving around i can't tell any difference between valves forced closed and OEM efficient mode.

BIGW0RM · 07-19-2023, 03:43 PM

Quote:

Originally Posted by chris3g

they will open partially in efficient mode if you apply sufficient throttle but cruising they are closed, just casually driving around i can't tell any difference between valves forced closed and OEM efficient mode.

Oh, I see. Makes sense!

07-19-2023, 02:59 PM	#1
TheProdigy Private First Class 1048 Rep 174 Posts Drives: G80 M3 Xdrive Join Date: Feb 2018 Location: Los Angeles, CA iTrader: (0)	Will Dahler fix my drone? Currently have the AA rear section with AA single midpipe. Annoying drone 1800-2k rpm anytime I’m on the freeway. Wondering if anyone knows if the valves remain open/closed at the 1800-2k range when driving in comfort. Is the Dahler a viable solution to make the cabin quiet?
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07-19-2023, 03:07 PM	#2
chris3g Major 1719 Rep 1,367 Posts Drives: 2023 M3 xdrive Join Date: Jan 2012 Location: NJ iTrader: (4)	no it wont help you, the valves are already fully closed cruising in efficient mode.
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