[Zabiz]

Hello, I have been in the process of finding out how I will be straight piping my car (2014 328i n26) from the stock down pipe to a custom y pipe to quad tips. My questions are A: What difference does 3 in piping have vs other?
B: what is the extra mufflers on the n26 vs the n20 which has what i expected ( pipe/ resonator/ muffler
C: if I delete that second portion will it help with the exhaust note?
As you can see the top image which is the n26 has a extra muffler before the resonator

[M2_MEDUSA]

The second muffler your referring to is actually not a muffler at all. It's a secondary catalytic converter

[Zabiz]

Originally Posted by IssaF32

The second muffler your referring to is actually not a muffler at all. It's a secondary catalytic converter

Ohhh I see, secondary cats. Well thank you! Now do you think it would make a major sound difference if I removed that as well as the resonator and muffler?

[njdctm3]

I have a res delete and mid pipe cat delete with the m performance exhaust and a catless downpipe on my n26. It sounds amazing and really wakes to car with sound wise with popping and crackle!

[F30619]

Got the active autowerks axel back installed with the cat and res was way too quiet for my taste

I took off the res and cat and got better sound still a little quiet

[Domotron]

Originally Posted by Heuvelmancole

I have a res delete and mid pipe cat delete with the m performance exhaust and a catless downpipe on my n26. It sounds amazing and really wakes to car with sound wise with popping and crackle!

you should post a video clip if like to hear what that sounds like

[Zabiz]

Originally Posted by F30Driver SD

Got the active autowerks axel back installed with the cat and res was way too quiet for my taste

I took off the res and cat and got better sound still a little quiet

not bad of a sound, I will definitely be just removing everything

[Zabiz]

Originally Posted by Heuvelmancole

I have a res delete and mid pipe cat delete with the m performance exhaust and a catless downpipe on my n26. It sounds amazing and really wakes to car with sound wise with popping and crackle!

I'd love to hear what your exhaust sounds like, this is what I am aiming to have my car sound like :

[jan31]

I removed my resonator and installed a 435i muffler on my N26 and I love it! Ill post a video soon!

[bmwchue]

Just finished installing my vrsf downpipe on my n26 and it sounds like stock. Could it be because of my secondary cat?

[M2_MEDUSA]

Originally Posted by bmwchue

Just finished installing my vrsf downpipe on my n26 and it sounds like stock. Could it be because of my secondary cat?

Yes same exact thing, only thing you may notice is the performance past 70mph which is a lot. Also you need to get rid of the stock exhaust system

[bmwchue]

Originally Posted by IssaF32

Yes same exact thing, only thing you may notice is the performance past 70mph which is a lot. Also you need to get rid of the stock exhaust system

Im thinking of awe catback but $1800]

[M2_MEDUSA]

Originally Posted by bmwchue

Im thinking of awe catback but $1800]

Go bm3 and awe you won't be disappointed

[Domotron]

Originally Posted by jan31

I removed my second CAT and installed a 435i muffler on my N26 and I love it! Ill post a video soon!

looking forward to it .. thinking about doing the same set up

[carbon428i]

Originally Posted by jan31

I removed my second CAT and installed a 435i muffler on my N26 and I love it! Ill post a video soon!

Can you send me a video of this?

[carbon428i]

Originally Posted by Heuvelmancole

I have a res delete and mid pipe cat delete with the m performance exhaust and a catless downpipe on my n26. It sounds amazing and really wakes to car with sound wise with popping and crackle!

How did you remove the secondary cat? The muffler shop i go to said because the pipe going into the secondary cat is flat he can't straight pipe it. Any ideas or advice on how i can do this?

[carbon428i]

Originally Posted by jan31

I removed my second CAT and installed a 435i muffler on my N26 and I love it! Ill post a video soon!

How did you remove the secondary cat? The muffler shop i go to said because the pipe going into the secondary cat is flat he can't straight pipe it. Any ideas or advice on how i can do this?

[SalazF30]

Originally Posted by carbon428i

How did you remove the secondary cat? The muffler shop i go to said because the pipe going into the secondary cat is flat he can't straight pipe it. Any ideas or advice on how i can do this?

I'm sure your muffler shop could cut where the pipe isn't as flat, I've seen many muffler shops do this

If they can't do it, maybe try another muffler shop or get the awe midpipe

[carbon428i]

Originally Posted by SalazF30

I'm sure your muffler shop could cut where the pipe isn't as flat, I've seen many muffler shops do this

If they can't do it, maybe try another muffler shop or get the awe midpipe

The pipe is flat until it goes into the cat, then comes out of the cat as a 3 inch pipe. Unless I'm seeing wrong

[SalazF30]

Originally Posted by carbon428i

The pipe is flat until it goes into the cat, then comes out of the cat as a 3 inch pipe. Unless I'm seeing wrong

A member called Phil was able to get it done.
I'll try to get a link for you

[SalazF30]

Originally Posted by SalazF30

A member called Phil was able to get it done.
I'll try to get a link for you

http://f30.bimmerpost.com/forums/sho...1058863&page=2
Scroll down until you get to the pic posted by Phil2thejay

[carbon428i]

Originally Posted by SalazF30

http://f30.bimmerpost.com/forums/sho...863&page=2
Scroll down until you get to the pic posted by Phil2thejay

On this thread? I don't see anything.