Did a muffler delete but now I get too much drone at low RPM

PhantomXone · 12-10-2022, 04:18 PM

Just installed a new diffuser & decided to do a muffler delete on my 640i. Sounds great but at low RPM I can hear a pretty loud drone inside my car which sucks. Would adding one or two resonators back there help tone down the drone at all? I also have a catted downpipe coming soon as well. any info will help thanks!

F-0H6 · 12-21-2022, 11:39 PM

looks great man. i want to delete my mufflers as well so cant help about the drone. did you cut out the resonators or just the mufflers?

PhantomXone · 12-22-2022, 10:53 AM

Quote:

Originally Posted by F-0H6

looks great man. i want to delete my mufflers as well so cant help about the drone. did you cut out the resonators or just the mufflers?

Thanks bro! Just the mufflers were deleted

e38740imd · 12-22-2022, 01:35 PM

https://vibrantperformance.com/ultra...onators-v1249/

this will fix your issue. pick the correct piping size. get the correct part number, buy on amazon

PhantomXone · 12-22-2022, 10:43 PM

Quote:

Originally Posted by e38740imd

https://vibrantperformance.com/ultra...onators-v1249/

this will fix your issue. pick the correct piping size. get the correct part number, buy on amazon

You think one is enough or do I need two?

e38740imd · 12-22-2022, 10:52 PM

Quote:

Originally Posted by phantomXone@gmail.com

You think one is enough or do I need two?

1 if you slit to both sides

2 if you put one on each side

Imho. 1 is good enough.

You decide

F15FromHell · 01-02-2023, 12:48 PM

Xpipe

PhantomXone · 01-05-2023, 12:55 PM

I'm actually getting one resonator installed right now on one side to see if it helps reduce the drone. I'll update you guys to see how it goes

PhantomXone · 01-06-2023, 10:10 AM

Ok it worked! Added only one to the left side and after driving it home after work the drone is very minimal! Woooo!

Praying when I put on the downpipe the drone doesn't come back haha

aopthof · 05-29-2023, 03:50 PM

Having the same problem after deleting my mufflers. Horrible drone around 2.000 rpm. How is the end result. You stayed with a single resonator or installed a second one after all?

PhantomXone · 06-01-2023, 10:16 AM

Quote:

Originally Posted by aopthof

Having the same problem after deleting my mufflers. Horrible drone around 2.000 rpm. How is the end result. You stayed with a single resonator or installed a second one after all?

The drone was reduced to a tolerable tone. Still running a single resonator for now & I'm fine with it

OnlyGerman · 06-07-2023, 11:26 AM

Did the same on mine. It actually doesn't bother me much, maybe I'm nuts

12-10-2022, 04:18 PM	#1
PhantomXone Enlisted Member 15 Rep 30 Posts Drives: F06 640i GC & E46 M3 Join Date: Aug 2021 Location: San Jose iTrader: (0)	Did a muffler delete but now I get too much drone at low RPM Just installed a new diffuser & decided to do a muffler delete on my 640i. Sounds great but at low RPM I can hear a pretty loud drone inside my car which sucks. Would adding one or two resonators back there help tone down the drone at all? I also have a catted downpipe coming soon as well. any info will help thanks!
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12-21-2022, 11:39 PM	#2
F-0H6 Enlisted Member 0 Rep 31 Posts Drives: F06 640i Join Date: Dec 2022 Location: STL iTrader: (0)	looks great man. i want to delete my mufflers as well so cant help about the drone. did you cut out the resonators or just the mufflers?
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12-22-2022, 01:35 PM	#4
e38740imd Second Lieutenant 65 Rep 287 Posts Drives: 2016 640i Join Date: Oct 2019 Location: Maryland iTrader: (0)	https://vibrantperformance.com/ultra...onators-v1249/ this will fix your issue. pick the correct piping size. get the correct part number, buy on amazon
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01-02-2023, 12:48 PM	#7
F15FromHell New Member 18 Rep 10 Posts Drives: 2018 BMW X5 Xdrive50i Msport Join Date: Oct 2022 Location: Miami iTrader: (0) Garage List 2018 BMW F15 X5 [0.00]	Xpipe
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01-05-2023, 12:55 PM	#8
PhantomXone Enlisted Member 15 Rep 30 Posts Drives: F06 640i GC & E46 M3 Join Date: Aug 2021 Location: San Jose iTrader: (0)	I'm actually getting one resonator installed right now on one side to see if it helps reduce the drone. I'll update you guys to see how it goes
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01-06-2023, 10:10 AM	#9
PhantomXone Enlisted Member 15 Rep 30 Posts Drives: F06 640i GC & E46 M3 Join Date: Aug 2021 Location: San Jose iTrader: (0)	Ok it worked! Added only one to the left side and after driving it home after work the drone is very minimal! Woooo! Praying when I put on the downpipe the drone doesn't come back haha Last edited by PhantomXone; 01-06-2023 at 01:42 PM..
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05-29-2023, 03:50 PM	#10
aopthof Registered 2 Rep 4 Posts Drives: Alpine B6 Join Date: Feb 2023 Location: Charlotte NC iTrader: (0)	Having the same problem after deleting my mufflers. Horrible drone around 2.000 rpm. How is the end result. You stayed with a single resonator or installed a second one after all?
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06-07-2023, 11:26 AM	#12
OnlyGerman Major 362 Rep 1,259 Posts Drives: F15, F13, F10, E60 Join Date: Jul 2019 Location: Sunshine State iTrader: (0)	Did the same on mine. It actually doesn't bother me much, maybe I'm nuts
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