Cure for the Drone?

[johnsfb]

Originally Posted by Mr.Metak2you

Exactly. Without that resonator that thing would melt your brain with the drone. Looks good and I best it sounds ridiculous! Any sound clips?

Sorry, no. Found it here

http://store.activeautowerke.com/act...haust-p18.aspx

[HP Autowerks]

Originally Posted by rogbmw

I love my 1M, and it is my DD. But, are there any options to quiet the drone? I have just under 4K miles, and the drone is definitely not going away. In fact, I think it is getting a little worse. In commuting to work, I am at that magic rpm which produces the drone.

A mid pipe replacement will do the trick. Some of the options are Berk Technology or Mad Dad.

[VO 1M]

Originally Posted by HP Autowerks

A mid pipe replacement will do the trick. Some of the options are Berk Technology or Mad Dad.

I have the Eisenmann Sport incl the mid pipes and the drone is gone!

[EINSER M]

Originally Posted by HP Autowerks

A mid pipe replacement will do the trick. Some of the options are Berk Technology or Mad Dad.

i confirm this
i swapped my mids with my sister's N55 mids and drone mostly gone

[MDORPHN]

Originally Posted by EINSER M

i confirm this
i swapped my mids with my sister's N55 mids and drone mostly gone

Same here (except I didn't get it from my sister).

Neil

[EINSER M]

Originally Posted by MDORPHN

Same here (except I didn't get it from my sister).

Neil

sssshhh she dont even know!

[1M Fan]

Does swapping the mid pipe get rid of the secondary cat? Can it be swapped and leave the stock muffler?

[EINSER M]

Originally Posted by 1M Fan

Does swapping the mid pipe get rid of the secondary cat? Can it be swapped and leave the stock muffler?

if you go with the N55 mids yes you are deleting the secondary cats and retaining the resonator. OEM rear section bolts on no problem. its a great setup if you dont want to go louder or uber loud.

[silvs]

Being fairly new to any kind of serious car handywork, how hard is it to swap the N54 mids for N55? There isn't a handy guide by chance is there?

[Zuzu]

Easy as.. 30 min job.. Straight bolt on swap.

[1M Fan]

Originally Posted by EINSER M

if you go with the N55 mids yes you are deleting the secondary cats and retaining the resonator. OEM rear section bolts on no problem. its a great setup if you dont want to go louder or uber loud.

I was trying to avoid messing with the emissions system. I realize the secondary cat is after the last sensor, but if that is what it takes, I may do it.

[Chris1M]

I don't understand people who think this car drones

[1SerieStud]

Originally Posted by Chris1M

I don't understand people who think this car drones

lol neither do I but leave it at that, otherwise this will open up another can of worms haha

[Zuzu]

Originally Posted by 1SerieStud

lol neither do I but leave it at that, otherwise this will open up another can of worms haha

+1

[-cj-]

It totally drones. Between 2.X and 3k rpm. I used to think the same way as you guys, "What are they talking about?". All it took was driving with the HK off and I could hear it for myself.

On the plus side, if it sounds that annoying inside, I imagine it must sound great outside! hahah

[Mr.Metak2you]

Originally Posted by 1SerieStud

lol neither do I but leave it at that, otherwise this will open up another can of worms haha

What can of worms? You keep coming back to a thread that is seeking a solution to the drone that does exist on this car. If it doesn't bother you great move on.

Originally Posted by Chris1M

I don't understand people who think this car drones

Originally Posted by Zuzu

+1

This thread is not intended to continue a debate of whether or not there is a drone or not, anyone who does so is taking the thread OFF TOPIC.

[1SerieStud]

Originally Posted by Mr.Metak2you

What can of worms? You keep coming back to a thread that is seeking a solution to the drone that does exist on this car. If it doesn't bother you great move on. This thread is not intended to continue a debate of whether or not there is a drone or not, anyone who does so is taking the thread OFF TOPIC.

I agree entirely with you, which is why I suggested for the other poster to not bring up whether he believes there is a drone or not...to avoid triggering responses such as the one you just provided. I forgot to unsubscribe since the last time I posted here, which is why I received the email from when s/he posted.

By the way, how's the progress on your solution? Just curious.

EDIT: When I said I agree, I meant the part in bold, as I do not believe my car drones. But I do respect and admire someone's dedication to finding solutions.

[oldBMWguy]

Well maybe some do and some don't......... but mine sure as hell does!
.... and I am going to install the N55 midpipe this week to see how it does re reducing "Du Drone". I might get a few more horses and a little more sound also... we shall soon see !

[sparoz]

So, if that's the case the secondary cats section is responsible for the drone? Ie, no drone on the akra when the valve's closed?

[oldBMWguy]

Originally Posted by rogbmw

I love my 1M, and it is my DD. But, are there any options to quiet the drone? I have just under 4K miles, and the drone is definitely not going away. In fact, I think it is getting a little worse. In commuting to work, I am at that magic rpm which produces the drone.

Today I installed the N55 midpipes replacement for the N54. I have only driven it for 15 miles, but it SURE helped reduce the Drone! I would say it is 80% gone, and is in a very reduced rpm range. The only place I can hear it is under light load between 2600-2800 rpm-- and even at that range it sounds much better than before-- i.e. a nicer sound.

THe whole system is a "little" deeper/ louder, but only slightly.

I can't comment re any HP /torque changes.

[Zuzu]

Cool... I am installing my N55 mids tomorrow..

[sparoz]

Originally Posted by Zuzu

Cool... I am installing my N55 mids tomorrow..

Let us know