[Cozmos]

I'm planning on having a shop weld on some Magnaflow round mufflers on my e90 and keep the resonators on.

I've pretty much narrowed it down to the following mufflers. My question is what effect is the length (14",18", 27") and diameter (5", 6") going to have on the tone (low vs high pitched, rasp, drone, etc..).

Also clearly the longer the muffler the quieter, but how much quieter would you expect the 27" to be over the 14" since it is a straight though design. I'm going for about halfway between stock and a muffler delete with respect to loudness.

Thanks!

[Sniz]

I'm assuming your will be putting a muffler on each bank?

where are you going to fit a 33" long muffler?

yes the 27" core will be much quiter, I wouldnt be surprised it be almost stock levels but flow a lot more.

[hipnotic]

go with the part number 12866

[secretsquirrel]

Originally Posted by josh06lau

go with the part number 12866

What are your reasonings for making this suggestion? Have you heard it? Do you have it?

[Bakeme521]

Don't use mufflers

[Cozmos]

Originally Posted by Sniz

I'm assuming your will be putting a muffler on each bank?

where are you going to fit a 33" long muffler?

yes the 27" core will be much quiter, I wouldnt be surprised it be almost stock levels but flow a lot more.

Yes, I will definitely be using two. And yes, I figured the 27" long would pose fitment issues. I'm leaning towards to 18" as this will be my DD and I don't want it to be devastatingly loud, which i fear the 14" long will.

However, I want a higher note and was curious what effect the can diameter would have, if any, as they use the same core piping size.

[Cozmos]

Originally Posted by Bakeme521

Don't use mufflers

I think I just read in a post that you had the 12866 mufflers before you did the delete?

What were your impressions of them compared to stock loudness and droning?

[Bakeme521]

Originally Posted by Cozmos

I think I just read in a post that you had the 12866 mufflers before you did the delete?

What were your impressions of them compared to stock loudness and droning?

Not too much louder just a bit deeper. A little louder than golf tee but with a lower pitch.

[Cozmos]

Originally Posted by Bakeme521

Not too much louder just a bit deeper. A little louder than golf tee but with a lower pitch.

Really? Well that's what I'm looking for.

I saw this thread and his seem prettty loud, but I think they may be 4" round not 5", not sure though.
http://www.e90post.com/forums/showthread.php?t=354063
http://www.e90post.com/forums/showthread.php?t=266368

[Bakeme521]

Originally Posted by Cozmos

Really? Well that's what I'm looking for.

I saw this thread and his seem prettty loud, but I think they may be 4" round not 5", not sure though.
http://www.e90post.com/forums/showthread.php?t=354063
http://www.e90post.com/forums/showthread.php?t=266368

You have pm.