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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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      12-05-2012, 11:14 PM   #287
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Sered, so how much would you say it'll cost to just open up the pass side of an E92 exhaust and remove 75% of its packing and then install it? I can't recall if you posted how much you paid, and I thought if you also opened up the driver's side just to peek inside or not (which I'd skip).
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      12-06-2012, 11:14 AM   #288
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Quote:
Originally Posted by Lotus99 View Post
Sered, so how much would you say it'll cost to just open up the pass side of an E92 exhaust and remove 75% of its packing and then install it? I can't recall if you posted how much you paid, and I thought if you also opened up the driver's side just to peek inside or not (which I'd skip).
I paid $200, but it would have been a good bit less if they only needed to do the passenger-side.
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      12-06-2012, 11:58 AM   #289
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If anyone wants a stock muffler to experiment on, I've got one in my garage.
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      12-06-2012, 07:56 PM   #290
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I have a second muffler I am in the process of removing all padding from (passenger side only). The sound of my modified setup with straight pipes has gotten much higher, and I am getting a LOT of compliments from the local group. I think its cause of the new lagfix settings in the G5 board I'm running. Anyway, it sounds great on secondary delete only, but it is pretty loud, soooo....this second set will be for when I go completely kittyless again, since if I keep it I think I'll go deaf when I go that route.
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      12-06-2012, 09:04 PM   #291
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Quote:
Originally Posted by tomz_335i View Post
I have a second muffler I am in the process of removing all padding from (passenger side only). The sound of my modified setup with straight pipes has gotten much higher, and I am getting a LOT of compliments from the local group. I think its cause of the new lagfix settings in the G5 board I'm running. Anyway, it sounds great on secondary delete only, but it is pretty loud, soooo....this second set will be for when I go completely kittyless again, since if I keep it I think I'll go deaf when I go that route.
Catless DPs increase the exhaust note considerably? I have a set in my living room awaiting install still
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      12-06-2012, 09:18 PM   #292
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Yeah much louder if you remove all the perforated piping. Add kittyless pipes and you might not be able to handle the noise.
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      12-06-2012, 10:25 PM   #293
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Originally Posted by Eric335 View Post
Catless DPs increase the exhaust note considerably? I have a set in my living room awaiting install still
I have catless dps with stock exhaust. With the wastegate comp on the procede at 30% it sounds pretty damn good!
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      12-06-2012, 11:14 PM   #294
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Originally Posted by sickem View Post
I have catless dps with stock exhaust. With the wastegate comp on the procede at 30% it sounds pretty damn good!
Thanks! Im at 50% wgposition right no, but it rattles at idle. You can eliminate rattle by moving it either up or down from 50%, right?

Also, as the wgposition gets smaller, the loudness goes up. What is the benefit of a higher wgposition? Tip-in boost?

Back OT: Im still waiting for a definitive catless solution that makes the car louder without crazy rasp. Any more updates to custom-made BMW PE-esque exhaust solutions?. I almost pulled the trigger on Vanguards but then i heard the rasp
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      12-06-2012, 11:26 PM   #295
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I say the best setup for performance and sound would be:

-CL 3" DP's
-Secondary cats replaced with Vibrant bottle resonators
-Keep E90 resonator but replace all crush piping with mandrel piping around it
-75% packing removed from muffler, and weld on tips to delete the flapper.

That's what I would do
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      12-07-2012, 04:29 AM   #296
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Just got a stock exhaust for $100 dropped it off and having them cut the mufflers off and replace perforated pipes
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      12-07-2012, 06:42 AM   #297
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Quote:
Originally Posted by Eric335 View Post
Thanks! Im at 50% wgposition right no, but it rattles at idle. You can eliminate rattle by moving it either up or down from 50%, right?

Also, as the wgposition gets smaller, the loudness goes up. What is the benefit of a higher wgposition? Tip-in boost?

Back OT: Im still waiting for a definitive catless solution that makes the car louder without crazy rasp. Any more updates to custom-made BMW PE-esque exhaust solutions?. I almost pulled the trigger on Vanguards but then i heard the rasp
Edit: I don't believe WGs rattle at idle...must be something else...do you have downpipes that could be causing it?

Yes, the lower the % the less rattle. Throttle tip-in is supposedly slower but I've also heard shiv downplay this. I'm no expert here, so I'm not sure how much of an issue that really is.
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Last edited by sickem; 12-07-2012 at 06:48 AM.
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      12-08-2012, 10:44 AM   #298
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Quote:
Originally Posted by Eric335 View Post
Thanks! Im at 50% wgposition right no, but it rattles at idle. You can eliminate rattle by moving it either up or down from 50%, right?

Also, as the wgposition gets smaller, the loudness goes up. What is the benefit of a higher wgposition? Tip-in boost?

Back OT: Im still waiting for a definitive catless solution that makes the car louder without crazy rasp. Any more updates to custom-made BMW PE-esque exhaust solutions?. I almost pulled the trigger on Vanguards but then i heard the rasp
My OEM modded mufflers should be ready and installed by friday... Cant wait!

Im replacing all three perforated pipes with ss solid pipes and leaving everithing else as is, just like the video below with the OEM M3 exhaust mod.


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      12-09-2012, 04:21 PM   #299
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Quote:
Originally Posted by TigOn. View Post
My OEM modded mufflers should be ready and installed by friday... Cant wait!

Im replacing all three perforated pipes with ss solid pipes and leaving everithing else as is, just like the video below with the OEM M3 exhaust mod.


How much is all that going to run you??
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      12-10-2012, 12:08 AM   #300
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Quote:
Originally Posted by TigOn. View Post
My OEM modded mufflers should be ready and installed by friday... Cant wait!

Im replacing all three perforated pipes with ss solid pipes and leaving everithing else as is, just like the video below with the OEM M3 exhaust mod.


How does the guy manage to weld the pipe all the way around in such a tiny spot? I can't see how he can weld the underneath of the new pipe?
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      12-10-2012, 02:16 AM   #301
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If any of you want to sell your OEM flapper from the drivers side tip shoot me a PM as I'm looking to buy one
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      12-10-2012, 07:49 AM   #302
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Quote:
Originally Posted by Lotus99 View Post
How does the guy manage to weld the pipe all the way around in such a tiny spot? I can't see how he can weld the underneath of the new pipe?
Mine could not, that's for sure.
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      12-10-2012, 07:49 AM   #303
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Quote:
Originally Posted by Dr. G View Post
If any of you want to sell your OEM flapper from the drivers side tip shoot me a PM as I'm looking to buy one

I can have them remove mine as i will not need it. Pm me an offert
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      12-10-2012, 09:12 PM   #304
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Quote:
Originally Posted by Sered View Post
Mine could not, that's for sure.
I take it a bit of the new pipe not being welded all the way around just means more gas escapes thru the gap rather than out the exhaust, acting like a perforated portion of the pipe, so no big deal.

I didn't think you replaced any of your perforated pipes with solid though?
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      12-10-2012, 10:06 PM   #305
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Why not just wrap the perforated part? It would produce the same effect and be cheaper.
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      12-11-2012, 11:23 PM   #306
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Is this really that hard to do? My local shop wants 4 hours plus to open the muffler and remove some packing..... Am I the only one that thinks that is a joke?
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      12-11-2012, 11:51 PM   #307
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Quote:
Originally Posted by Dylan335i View Post
Is this really that hard to do? My local shop wants 4 hours plus to open the muffler and remove some packing..... Am I the only one that thinks that is a joke?
Seems like ajoke to me. I could get that done in that amount of time and im no pro
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      12-12-2012, 07:08 AM   #308
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Quote:
Originally Posted by Dylan335i
Is this really that hard to do? My local shop wants 4 hours plus to open the muffler and remove some packing..... Am I the only one that thinks that is a joke?
Sounds like a joke to me too, seems like it can be done in less than 2 hours? It's just removing packing, not like you're asking to get solid pipes welded. You should probably call another shop.
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