[yufeichen]

Hello all,

I am currently driving a E93 330i euro-spec so 272 ps. I installed PE like 8 months ago. I like the sound it makes and all, but for some reason it does not sound as loud and as aggresive as most of videos that I found on our forum and youtube. So I am wondering what can I do to improve the sound, especially the volume, because it seems a bit too quiet for me right now. I read somewhere that E92/E93 come with a straight mid-pipe, but I also read only US model has the straight mid pipe, is that true? so should I get a straight mid-pipe for the car to make it a bit louder?

Also I really like the quad-outlet style that some car has, so I am wondering if I can go to a exhaust shop to ask them to modify the PE, so that I can have two extra outlet on the other side as well? is that possible at all? also would that affect the performance of the car due to lack of back pressure or whatever?

Thanks a lot in advance for all your help

[SDemetris]

I have a straight mid pipe (no resonator) with mine. It also does get a little bit louder over time

[yufeichen]

Originally Posted by SDemetris

I have a straight mid pipe (no resonator) with mine. It also does get a little bit louder over time

so its true that E93 euro spec does not have a straight middle pipe?

[SDemetris]

I am not sure. Maybe look online or under your car, but i wouldnt think that they would sell two different exhausts.. i could be wrong tho

[RazRokz.!]

Delete your 2ndary cats. It'll get louder...

[Mike.]

Look at the golf tee mod and the vacuum plug on your 330i. Unplug it

I didn't read the whole thing, but check if it deleted your resonator? Idk

[smellthebeans]

Originally Posted by yufeichen

Hello all,

I am currently driving a E93 330i euro-spec so 272 ps. I installed PE like 8 months ago. I like the sound it makes and all, but for some reason it does not sound as loud and as aggresive as most of videos that I found on our forum and youtube. So I am wondering what can I do to improve the sound, especially the volume, because it seems a bit too quiet for me right now. I read somewhere that E92/E93 come with a straight mid-pipe, but I also read only US model has the straight mid pipe, is that true? so should I get a straight mid-pipe for the car to make it a bit louder?

Also I really like the quad-outlet style that some car has, so I am wondering if I can go to a exhaust shop to ask them to modify the PE, so that I can have two extra outlet on the other side as well? is that possible at all? also would that affect the performance of the car due to lack of back pressure or whatever?

Thanks a lot in advance for all your help

Your PE sounds quieter compared to US cars because you have the European Part Installed?

18302217676
http://www.leebmann24.de/bmw-perform...i-n52-n53.html

Here is the US part number
18102208794
http://www.ecstuning.com/BMW-E92-328...nce/ES2194274/

[smellthebeans]

OP

Performance parts are engineered for different markets including (especially) suspension parts!

If you dont want to believe me google a guy named Mike Miller. I think he knows what he is talking about.

In any case ask your dealer about the US part number or go check out Active Auto Werk N52 signature exhaust.

[yufeichen]

Originally Posted by smellthebeans

Your PE sounds quieter compared to US cars because you have the European Part Installed?

18302217676
http://www.leebmann24.de/bmw-perform...i-n52-n53.html

Here is the US part number
18102208794
http://www.ecstuning.com/BMW-E92-328...nce/ES2194274/

Thanks a lot for your info man. Just wondering whats so special about that midsection pipe, is it just a straight pipe? or it there anything special to it? can I just go to a local exhaust shop to get a straight mid pipe to get the same effect? also do u have any idea about the quad-outlet? can I just mod based on the original PE?
Thanks man!

[yufeichen]

Originally Posted by Emozoo

Look at the golf tee mod and the vacuum plug on your 330i. Unplug it

I didn't read the whole thing, but check if it deleted your resonator? Idk

thanks man, I think I still have the resonator on cuz I never touched the mid pipe, it is still stock. should I just get a straight mid pipe now? also do u have any idea about the quad outlet? can I just make another two outlet on the other side on the original PE?

thanks a lot man

[yufeichen]

Originally Posted by RazRokz.!

Delete your 2ndary cats. It'll get louder...

Would I still be able to pass the annual car check? or any warning message in car? btw do u have any idea about the possibility of the quad outlet?

Thanks buddy

[Mike.]

Originally Posted by yufeichen

thanks man, I think I still have the resonator on cuz I never touched the mid pipe, it is still stock. should I just get a straight mid pipe now? also do u have any idea about the quad outlet? can I just make another two outlet on the other side on the original PE?

thanks a lot man

Theres a thread floating around here for dual outlets, But...Delete the resonator. That will help immensely. Sounds like your problem. Actually that is your problem. Have a straight pipe from the cats to delete the res.

[yufeichen]

Originally Posted by Emozoo

Theres a thread floating around here for dual outlets, But...Delete the resonator. That will help immensely. Sounds like your problem. Actually that is your problem. Have a straight pipe from the cats to delete the res.

so I should keep the cat on right, but just delete the resonator? but has anyone moded a PE for a Quad outlet in the forum? cuz I have seen people either buy a quad straight away or they custom make a quad, but I haven't seen anybody mod a PE though.

[Mike.]

Originally Posted by yufeichen

so I should keep the cat on right, but just delete the resonator? but has anyone moded a PE for a Quad outlet in the forum? cuz I have seen people either buy a quad straight away or they custom make a quad, but I haven't seen anybody mod a PE though.

I wouldnt open up the can of worms trying to modify the exhaust.
Just delete the resonator. Deleting the cats may be illegal in your area.

[yufeichen]

Originally Posted by Emozoo

I wouldnt open up the can of worms trying to modify the exhaust.
Just delete the resonator. Deleting the cats may be illegal in your area.

I see, what could be the potential danger if I try to mod the current PE? Cuz I actually want the look of the quads but I don't really want to invest in for the entire new set of system since I haven't had this for long, any advice?

[Mike.]

Originally Posted by yufeichen

I see, what could be the potential danger if I try to mod the current PE? Cuz I actually want the look of the quads but I don't really want to invest in for the entire new set of system since I haven't had this for long, any advice?

http://www.e90post.com/forums/showthread.php?t=265769

read up

[yufeichen]

Originally Posted by Emozoo

http://www.e90post.com/forums/showthread.php?t=265769

read up

thanks buddy, btw would I be losing any low rev torque when I delete my resonator?

[Mike.]

Haha there's another thread explaining that too.. Long story short you'll lose some tq if you delete your cats only
To gain some hp in the top
Band of the rpm I think

[yufeichen]

Originally Posted by Emozoo

Haha there's another thread explaining that too.. Long story short you'll lose some tq if you delete your cats only
To gain some hp in the top
Band of the rpm I think

Ummm I read a bit about it, most people are saying that getting rid of 2nd cat will lose the torque but didn't really say much about resonator though?

[SDemetris]

Where did anyone say that secondary cat delete losses torque?

[Mike.]

Originally Posted by SDemetris

Where did anyone say that secondary cat delete losses torque?

some thread a long time ago, guy was like an aerospace engineer

[SDemetris]

Originally Posted by Emozoo

some thread a long time ago, guy was like an aerospace engineer

was it maybe mapleridges old thread when he got a custom exhaust and lost a bunch of power? either way, doesnt make sense to me. Maybe if the bends were poorly made i would believe it. or maybe if BMWs cats are super high tech and act like diffusers for the air flow.. otherwise i think there's dyno evidence as well as a rationale why it would give more power