[Alexdevera]

Not much going for me with the search button, but..

Would it make a difference in sound if I were to install an X-pipe instead of a simple resonator delete? This will be for my 328i which already has a remus muffler, but I don't know if the sound would be different or the same from either option. Does anyone know the differences in sound between the two set ups?

P.S. I want more of an aggressive sound from my car, but after previewing some clips, I found that some cars may have this "rattling" exhaust note that I'm not a fan of. If this is the case I might just pull the plug on this project entirely.

[Noir]

I have an x-pipe with dual remus mufflers....
I will post a YT link here in a sec.
I have some rasp, but that will be corrected in December while I fly to TX for that entire month.

[Noir]

Just got them on in this video

On the dyno hitting redline

[Alexdevera]

This is a 335i conversion I assume right? Wouldn't that yield a different sound from what I have? My muffler is a quad like yours but mine is the one of the variants that are designated for the NA models.

[Noir]

I'm assuming its different..
I have AA headers as well. A mini cat at the cross to reduce the smell.. Is your muffler the type that has a pipe that branches off from the main muffler to fit behind the cargo tray??

[Alexdevera]

That's the one I have exactly. I really would like to do this mod, but I'm just afraid that I may be paying more to get the same sound.

The resonator would be replaced by an x pipe, but it would have to connect to a y pipe to fit the 2-in-1-out configuration.

IIRC, the pipings' shapes would have an impact on the airflow thus causing a change in sound. That's why I'm considering this over the simple res delete.

[TylerJamesInc]

I don't know enough about exhaust to have any solid input, but I think the x-pipe being that close to the y would be completely pointless. If it were a foot- or so- after the header-to-midpipes flange, I could see it having more of an effect, but just right before the y seems ineffective.

[Alexdevera]

Hey guys,

As an update, I went ahead and did it. The x-pipe provided a very distinct sound in comparison to the plain old resonator delete. The note can be described as a growling kind of noise but it's more refined than you would expect. I'll be posting a video of this tomorrow, and another down the road if needed. (These things need to break in too right?)

[Noir]

Originally Posted by Alexdevera

Hey guys,

As an update, I went ahead and did it.

Congrats!
That's awesome.
Stoked to hear it!

[Rival]

Originally Posted by Alexdevera

Hey guys,

As an update, I went ahead and did it. The x-pipe provided a very distinct sound in comparison to the plain old resonator delete. The note can be described as a growling kind of noise but it's more refined than you would expect. I'll be posting a video of this tomorrow, and another down the road if needed. (These things need to break in too right?)

So you have a X pipe that flows into a y pipe or you just have the x and dual exhaust exits on the bumper..??

curious

[Rival]

I want to add a x pipe right where the 2nd cats go. then do a y pipe a couple feet back.

[Alexdevera]

It's an X that connects to a Y.

[Rival]

so you have a good 24-28 inches between the X & Y...??

[Alexdevera]

I'm not sure about the length exactly, but the X is about a foot from the Y. I'm hoping a secondary delete can bring out more sound.

[TylerJamesInc]

I would have loved to hear a before and after of the X pipe install. I still find it hard to believe having it right before the Y would do anything at all.
However, putting one where the secondaries are- THIS I can get on board with! I would definitely like to do this

[Rival]

Originally Posted by TylerJamesInc

I would have loved to hear a before and after of the X pipe install. I still find it hard to believe having it right before the Y would do anything at all.
However, putting one where the secondaries are- THIS I can get on board with! I would definitely like to do this

thats where i want to put it.

[Alexdevera]

Here's the clip after a while guys. I've been a bit busy and have been meaning to get this out. While recordings do not do the actual exhaust note justice, it's still best listened to with headphones.

Like the description I left states, I felt that it has more growl and more burble than a simple res delete. The stronger growl can be attributed to the unique piping, but I want to bring the sound out more. Maybe AFE race pipes, or SS mids can do the trick.

Open to comments and criticism, thanks guys.

[TylerJamesInc]

Nice! I love pops and crackles you can hear.
It is a 6mt or AT? How does it sound on decel/under compression with the throttle closed?

[Alexdevera]

It's my daily l so it's 6AT. But as an added note, I don't know if it's a placebo effect, but the car feels as if it pulls smoother, possibly from slight weight reduction.