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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 > Modify OEM exhaust to sound like PE exhaust



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      08-06-2013, 04:07 AM   #397
jengstro
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Quote:
Originally Posted by StevenY. View Post
+1, I'd like to see one too.

@Jengstro If I read correctly, you covered all the perforated pipes with header tape and how much muffler packing was removed?
header tape? I covered it with cutting one metal pipe half. Right side, full packing back. Left side 75% muffler 'wool' taken out.

Ok, If you guys inisist :-) I have GoPro3 and external mic. I will make a video... Too bad theres no tunnels near by.
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      08-08-2013, 08:34 PM   #398
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Quote:
Originally Posted by jengstro
Quote:
Originally Posted by StevenY. View Post
+1, I'd like to see one too.

@Jengstro If I read correctly, you covered all the perforated pipes with header tape and how much muffler packing was removed?
header tape? I covered it with cutting one metal pipe half. Right side, full packing back. Left side 75% muffler 'wool' taken out.

Ok, If you guys inisist :-) I have GoPro3 and external mic. I will make a video... Too bad theres no tunnels near by.
Would you mind making a video? any drone? Im thinking about covering half or 3/4 of the pipe with either header tape or welding.
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      08-11-2013, 12:19 PM   #399
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Here is the video for the 335i muffler mod. Pretty close to reality. Bit crispier in real life.

Enjoy! oh yes left side valve is open on these videos, naturally.
I ran with map5 + 30% ethanol mixture.

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      08-11-2013, 01:27 PM   #400
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Quote:
Originally Posted by jengstro View Post
Here is the video for the 335i muffler mod. Pretty close to reality. Bit crispier in real life.

Enjoy! oh yes left side valve is open on these videos, naturally.
I ran with map5 + 30% ethanol mixture.

Awesome video! thanks a lot! How is the drone?

I'm thinking about doing the left side with a straight pipe. And then use the exhaust flapper open or closed to be quite or loud.. Just have to hook a switch to the wires in the trunk.
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      08-11-2013, 10:01 PM   #401
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Quote:
Originally Posted by psmitty95 View Post
You guys with E90's and catless DP's should just delete your secondary cats. Sounds amazing imo. This is my setup (VRSF catless DP, Secondary cat delete, and everything else stock otherwise).

smitty, i got vrsf catless dp as well...did you just straight pipe the 2nd cats or x pipe? i like the way yours sounds but i want a lil more gargle...just a little more
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      08-13-2013, 12:58 AM   #402
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Quote:
Originally Posted by musseilm View Post
Awesome video! thanks a lot! How is the drone?

I'm thinking about doing the left side with a straight pipe. And then use the exhaust flapper open or closed to be quite or loud.. Just have to hook a switch to the wires in the trunk.
Doing this to left side is a good idea. Specially, if you have control for it. Like JB4.Enabling the left side valve, makes my car a notch quieter. Though, I think it was so with JB4 map 2 -> exhaust valve required to be open.

No drone, when you do higher speeds = higher revs the noise ofcourse a bit increase, but then wheels/wind will noise will increase also. Not an issue.

Like I said earlier, honestly, maybe cover 75% of the pipe with holes. But thats just my opinion.
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      08-13-2013, 11:49 AM   #403
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Quote:
Originally Posted by jengstro View Post
Here is the video for the 335i muffler mod. Pretty close to reality. Bit crispier in real life.

Enjoy! oh yes left side valve is open on these videos, naturally.
I ran with map5 + 30% ethanol mixture.

This sounds awesome, I think it's mainly due to the catless dp.
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      08-13-2013, 02:03 PM   #404
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That sounds really good! I think I'll finally make the jump. Since I have an e90, I'll probably need to replace the resonator with a x pipe.
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      08-13-2013, 02:06 PM   #405
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who has bmw pe with catless dp here? just wanna know how bad it smells :/
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      08-14-2013, 12:39 AM   #406
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Anything catless would smell terrible if your stuck in traffic. I had a catless WRX before and I wouldn't wanna go catless anymore just because of the traffic jams during peak hours !
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      08-14-2013, 07:04 AM   #407
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Quote:
Originally Posted by N54CherryHill View Post
who has bmw pe with catless dp here? just wanna know how bad it smells :/
i have catless dp's and pe and the smell is fine, i didn't notice any difference.
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      08-14-2013, 01:04 PM   #408
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Quote:
Originally Posted by jengstro View Post
Here is the video for the 335i muffler mod. Pretty close to reality. Bit crispier in real life.

Enjoy! oh yes left side valve is open on these videos, naturally.
I ran with map5 + 30% ethanol mixture.

Sounds great. However I wonder how it would sound with resonators in place of secondary cats with this setup. I still hear a bit of rasp halfway through the video when you change camera angles to the side view. Nonetheless wot sounds amazing.
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      08-14-2013, 02:01 PM   #409
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Y'all need to look into dynomax vt. Almost Same design as the dinan.
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      08-15-2013, 12:47 PM   #410
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Quote:
Originally Posted by TXTT View Post
Y'all need to look into dynomax vt. Almost Same design as the dinan.
The dynomax vt have too much sound cancellation. If fellows are trying to achieve the PE sound, the less sound cancellation the better.
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      08-15-2013, 01:32 PM   #411
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Quote:
Originally Posted by drjekl View Post
i have catless dp's and pe and the smell is fine, i didn't notice any difference.
why everybody says it stinks
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      08-15-2013, 05:06 PM   #412
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Quote:
Originally Posted by N54CherryHill View Post
why everybody says it stinks
Perhaps they just need to harden up?
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      08-19-2013, 11:02 PM   #413
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Quote:
Originally Posted by N54CherryHill View Post
why everybody says it stinks
I think it stinks if you have both catless dps and secondary cat delete.
If you retain the secondary cats (but still install the catless dps), it shouldn't smell too bad. (mostly in the first minute after a cold startup)
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      08-20-2013, 07:41 PM   #414
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Picked up a stock exhaust from one of the members locally. I started with cutting the drivers side top half off. Opened the resonator chamber a put a 2.5inch piper around the perforated one. Closed it all up and welded shut.
Installed it on the car drove around for 1.5day and decided that i was going to do the other side for 50% since there was totally no drone. As you can see in the pictures the perforated pipe on the passenger side is only covered for 50%.

To me it sounds amazing and absolutely no drone whatsoever i am very sensitive to drone. Remember this is not the same a muffler delete. There is still a pipe connected between the left and the right muffler. With the windows up i can hardly hear the difference. As far is i can judge from the YouTube videos that are recorded from inside the cabin with the windows down it sounds the same or very very similar.

In the next days i will make a sound/video clip.



(first time welding so be easy on me! 90dollar welder from harbor freight)
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      08-20-2013, 08:54 PM   #415
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Can't wait to see your video. Did you remove any packing or did you just leave the packing in?
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      08-20-2013, 09:42 PM   #416
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Quote:
Originally Posted by StevenY.
Can't wait to see your video. Did you remove any packing or did you just leave the packing in?
Put all the packing back in
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      08-21-2013, 05:40 PM   #417
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What size of a pipe did you use? 60mm? I noticed that it doesn't completely cover it. Would a 65mm fit better?

Quote:
Originally Posted by jengstro View Post
header tape? I covered it with cutting one metal pipe half. Right side, full packing back. Left side 75% muffler 'wool' taken out.

Ok, If you guys inisist :-) I have GoPro3 and external mic. I will make a video... Too bad theres no tunnels near by.
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      08-21-2013, 05:47 PM   #418
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Quote:
Originally Posted by musseilm View Post
Picked up a stock exhaust from one of the members locally. I started with cutting the drivers side top half off. Opened the resonator chamber a put a 2.5inch piper around the perforated one. Closed it all up and welded shut.
Installed it on the car drove around for 1.5day and decided that i was going to do the other side for 50% since there was totally no drone. As you can see in the pictures the perforated pipe on the passenger side is only covered for 50%.
So it looks like a 2.5" pipe is a perfect fit over the pipe with holes? Is that on an E90 or E92? I read a few posts back that E92s don't have packing on the driver's side?
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