Equal-length exhaust discussion: new S55 sounds

[ra2289]

Originally Posted by spool twice

Side note, glad AA stepped up too. I had a feeling that would happen after they appreciate one of my post referencing AA earlier in this thread.

The "bend" that changed the S55 exhaust sound forever...

I think you've been saying that companies would jump in from the beginning, good call. If AA is bringing an EQL exhaust then that was much quicker than I expected. The more the merrier. Super exciting.

[coxxoc]

This video has more sound scenarios than the others I’ve heard. It’s the Valvetronic Designs system.

[Bradycat77]

^^ that sounds awesome!

[Insane435]

wow, alot of options out there. I guess it may be time to finally make the switch over to the F82.

[behindthen0thing]

leave it up to the United States to perfect a German design. I don't know what BMW was thinking, now that you can hear how good the M4/3 can sound it kinda makes you mad!

[ra2289]

Originally Posted by behindthen0thing

leave it up to the United States to perfect a German design. I don't know what BMW was thinking, now that you can hear how good the M4/3 can sound it kinda makes you mad!

My first thought was; You mean I didn't have to drive around sounding like this, well what took so long? I guess they needed a push.

It also stirs up my cynicism a little bit lol.

[Bimmer28312]

Will this match up to the AA mid pipe?

[doughboy]

Originally Posted by Bimmer28312

Will this match up to the AA mid pipe?

No, i think you miss the point. AA midpipe merges the streams up front so that's it, no can fix after that.

Equal length needs the streams separate till the the magic bend at the back.

AA has to go in the bin if you want this sound.

[doughboy]

Originally Posted by Flange

That’s the one..

Great result flange!

Looks like these exhaust manufacturers have all had their Eureka moment

[spool twice]

...and to think, a few months ago this concept was questioned.

on a side note, I do have an interesting mid-pipe concept that won't have pipes bending all over the place, may work and mate with other secondary cat-back exhausts.

Those who aren't equal-length but have an aftermarket exhaust, sounds like you may just be able to remove your crossover section and make some revising piping to the passenger side and re-cross them over, shouldn't be too spendy.

[M3NVCE]

Originally Posted by coxxoc

This video has more sound scenarios than the others I’ve heard. It’s the Valvetronic Designs system.

Anyone noticed the U-bend at 1:20 mark? Wonder where they got that idea from

[Ghosn]

Originally Posted by coxxoc

This video has more sound scenarios than the others I’ve heard. It’s the Valvetronic Designs system.

I don't know, I'm not sold with that sound yet. It seems to be a very tinny/hollow sound. I'm not sure if I'm explaining it right but it doesn't do it for me yet.

[gatorfast]

Wow I actually like the sound of that valvetronic exhaust. Literally the first exhaust I have liked on the F8x. Everything else has just been different tones of poo.

[Ed_rx7]

Originally Posted by spool twice

...and to think, a few months ago this concept was questioned.

on a side note, I do have an interesting mid-pipe concept that won't have pipes bending all over the place, may work and mate with other secondary cat-back exhausts.

Those who aren't equal-length but have an aftermarket exhaust, sounds like you may just be able to remove your crossover section and make some revising piping to the passenger side and re-cross them over, shouldn't be too spendy.

Please share your thoughts on this!!

[DanMpower]

Originally Posted by coxxoc

This video has more sound scenarios than the others I’ve heard. It’s the Valvetronic Designs system.

Damn that Valvetronic system makes the S55 sound similar to my E92 S65 with test pipes and MPE but with a cleaner note and less rasp.

It has the same exotic raspy warble in certain parts of the RPM range. The S55 can sing a beautiful note, who would have thought!??

[DanMpower]

Originally Posted by behindthen0thing

leave it up to the United States to perfect a German design. I don't know what BMW was thinking, now that you can hear how good the M4/3 can sound it kinda makes you mad!

Imagine a BMW rep seeing this thread then forwarding it to their engineering team.

Next G8x M3/M4 will have an equal length exhaust system as well.

[Kilabyte]

Originally Posted by Ghosn

I don't know, I'm not sold with that sound yet. It seems to be a very tinny/hollow sound. I'm not sure if I'm explaining it right but it doesn't do it for me yet.

I'm with you on that one. I'm used to the deepness of my MPE and if anyone could make that into an equal length unit that would be perfect for me, seems like one poster from Germany was close but chasing some rasp issues and hasn't posted an update.

Spool, what do you have in mind if you don't mind me (us) asking?

[Lifestyler]

Originally Posted by coxxoc

This video has more sound scenarios than the others I’ve heard. It’s the Valvetronic Designs system.

Imo that is also raspy....

And nobody show a setup with catless dps....

[doughboy]

Originally Posted by spool twice

...and to think, a few months ago this concept was questioned.
.

It's the classic 3 stages of scientific acceptance.

1. Not true / ridicule etc

2. It's contrary to current practice

3. We always knew it

[nbennettksu]

Originally Posted by flipnkraut

Where'd you see pics?

No specs yet, just the video that's up. All of their exhausts have their logo on each tip

[Flange]

Originally Posted by doughboy

It's the classic 3 stages of scientific acceptance.

1. Not true / ridicule etc

2. It's contrary to current practice

3. We always knew it

In response to 1 above..
There’s a guy on MCutters saying an equal length pipe will throw the timing out..

[Kilabyte]

Originally Posted by Lifestyler

Imo that is also raspy....

And nobody show a setup with catless dps....

Any updates on your setup?