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BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Powertrain and Drivetrain Discussions > N54 Turbo Engine / Drivetrain / Exhaust Modifications - 335i > Exhaust help



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      07-13-2020, 08:10 PM   #1
thormessiah
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Exhaust help

I’m trying to get a bit more sound out of my current exhaust system. It’s loud when I get on it but nothing too crazy. I have VRSF catless downpipes and a Dinan Exhaust for e92. Pretty sure everything else is stock. Just want to make it a little louder with out it being raspy or too extreme. Is it possible to just buy the upgraded piping and keep my current mufflers?
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      07-13-2020, 11:53 PM   #2
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I have catless dps with the stock secondary cats and then the mufflers deleted. Gonna be honest it's not that loud and it doesn't drone at all, not sure if this is on par with everyone else but anything under 4k is fairly soft and quiet, after that though it sounds like an entirely different car. Loud as hell
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      07-14-2020, 12:42 AM   #3
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Originally Posted by thormessiah View Post
I'm trying to get a bit more sound out of my current exhaust system. It's loud when I get on it but nothing too crazy. I have VRSF catless downpipes and a Dinan Exhaust for e92. Pretty sure everything else is stock. Just want to make it a little louder with out it being raspy or too extreme. Is it possible to just buy the upgraded piping and keep my current mufflers?
You could do a secondary cat delete & replace them with 1792 Vibrant Resonators

Please post a video of your car at cold & hot startup with a few revs once the engine settles down and hits 650 rpms.
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      07-14-2020, 03:38 PM   #4
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You could do a secondary cat delete & replace them with 1792 Vibrant Resonators

Please post a video of your car at cold & hot startup with a few revs once the engine settles down and hits 650 rpms.
Here’s a clip https://youtu.be/uYWozVFjCNYhttps://youtu.be/uYWozVFjCNY
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      07-14-2020, 03:49 PM   #5
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Of all the aftermarket exhausts for our cars I prefer the sound of the vrsf 3.5" single exhaust system. I know there have been arguments about flow and performance advantages of keeping it split, but 2 into 1 SOUNDS better, IMO.

https://www.vr-speed.com/vrsf-3-5-st...35i-335xi.html
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      07-14-2020, 03:54 PM   #6
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Quote:
Originally Posted by Tyc0 View Post
I have catless dps with the stock secondary cats and then the mufflers deleted. Gonna be honest it's not that loud and it doesn't drone at all, not sure if this is on par with everyone else but anything under 4k is fairly soft and quiet, after that though it sounds like an entirely different car. Loud as hell
At 4k the flap opens unless you delete it or Golftee mod, do you still have it?
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      07-14-2020, 08:05 PM   #7
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Quote:
Originally Posted by mweisdorfer View Post
You could do a secondary cat delete & replace them with 1792 Vibrant Resonators

Please post a video of your car at cold & hot startup with a few revs once the engine settles down and hits 650 rpms.
Here’s a clip https://youtu.be/uYWozVFjCNYhttps://youtu.be/uYWozVFjCNY
That sounds really nice. Deep burble
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      07-14-2020, 08:47 PM   #8
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That sounds really nice. Deep burble
Thanks man! Do you know how hard the cat delete is? Is that something a muffler shop could do
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      07-14-2020, 09:34 PM   #9
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Quote:
Originally Posted by kens View Post
Quote:
Originally Posted by Tyc0 View Post
I have catless dps with the stock secondary cats and then the mufflers deleted. Gonna be honest it's not that loud and it doesn't drone at all, not sure if this is on par with everyone else but anything under 4k is fairly soft and quiet, after that though it sounds like an entirely different car. Loud as hell
At 4k the flap opens unless you delete it or Golftee mod, do you still have it?
No I don't, nothing but cats
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      07-15-2020, 08:13 AM   #10
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Quote:
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That sounds really nice. Deep burble
Thanks man! Do you know how hard the cat delete is? Is that something a muffler shop could do
Not difficult at all. Just buy the Vibrant HF 1792 Resonators & maybe 2' of SS 2 1/2" exhaust pipe in advance. Take those to the shop & you'll be good. Here's a pic of mine.

[IMG][/IMG]
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      07-17-2020, 02:27 PM   #11
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Quote:
Originally Posted by mweisdorfer View Post
Not difficult at all. Just buy the Vibrant HF 1792 Resonators & maybe 2' of SS 2 1/2" exhaust pipe in advance. Take those to the shop & you'll be good. Here's a pic of mine.

[IMG][/IMG]
Does this setup drone?
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      07-17-2020, 07:08 PM   #12
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Quote:
Originally Posted by mweisdorfer View Post
Not difficult at all. Just buy the Vibrant HF 1792 Resonators & maybe 2' of SS 2 1/2" exhaust pipe in advance. Take those to the shop & you'll be good. Here's a pic of mine.

[IMG][/IMG]
Does this setup drone?
Absolutely not. The vibrant resonators take out drone & rasp. By deleting the secondary cats (assuming you have downpipes) you alleviate all back pressure on the turbos.
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      07-17-2020, 07:21 PM   #13
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Resonators are on the way! I'll post a clip once everything is setup and running
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      07-18-2020, 03:47 AM   #14
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Quote:
Originally Posted by mweisdorfer View Post
Absolutely not. The vibrant resonators take out drone & rasp. By deleting the secondary cats (assuming you have downpipes) you alleviate all back pressure on the turbos.
Thanks mate, will look into it.
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      08-06-2020, 01:48 PM   #15
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Soo I got these installed... and so far I think I’m not a fan. The sound is louder but it changed considerably, it’s raspier and throatier and it DOES drone at certain rpms. I will try to post a sound clip later
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