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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 > YAY rasp of doom WTF...



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      09-25-2007, 01:56 AM   #133
Walked U
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Ok, heres some pictures oh the exhaust installed.







I forgot my memory card at home when I got the exhaust installed so i took few pictures on my phone.

But anyways heres some crap that I have to rant about before.

The clamps that the exhaust come with suck ... They dont make a tight enough seal to stop exhaust leaks. So I have to head back to the shop tomorrow to put new clamps on to stop the leaks.

I have about 4 leaks... 1 for every clamp.

It took about 5 hours to put everything on with the catless DP's, then put on the exhaust, and take the catless DP's and put the stock DP's back on.

With catless DP's and the full esinemann exhaust (SR pipes / race mufflers) it still sounds real metallicy up top, and stupid loud...

Tomorrow ill take sound clips of the car when the new clamps are on. It sounds very aggressive, no more rasp, no more obnoxiously loud sound. It does drone in the cabin. But nothing close to complain about.

On WOT it sounds very good.

Like I said tomorrow when i get the leaks fixed up ill take some clips.
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      09-25-2007, 01:59 AM   #134
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so your running catless DPs now with eisenmann sections 1-3?
how do you know if its leaking? i hope mine isnt
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      09-25-2007, 02:01 AM   #135
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Quote:
Originally Posted by that guy nico View Post
so your running catless DPs now with eisenmann sections 1-3?
how do you know if its leaking? i hope mine isnt
Im on section 1-2 with primary cats on.


It makes a hissing sound when you have a leak. Almost sounds like spool up on a turbo.
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      09-25-2007, 08:23 AM   #136
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WalkedU... I forgot, do you have the Race or Meisterchaft version?
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      09-25-2007, 10:35 AM   #137
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So you resorted to putting the stock downpipes back on? That sucks man.
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      09-25-2007, 11:05 AM   #138
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oh boy...:/
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      09-25-2007, 11:28 AM   #139
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Originally Posted by BoostedBMW View Post
WalkedU... I forgot, do you have the Race or Meisterchaft version?
He has the Race.
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      09-25-2007, 11:38 AM   #140
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Originally Posted by OC 335i View Post
He has the Race.
Thanks.
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      09-25-2007, 12:07 PM   #141
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Quote:
Originally Posted by Park2670 View Post
So you resorted to putting the stock downpipes back on? That sucks man.
Ya but you know the fucked up part... My car feels the same. Anyways Im getting some high flows / euro spec dp's later on and just swapping them.
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      09-25-2007, 12:20 PM   #142
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I thought that the DPs were supposed to add power. Whats all the hype for then?
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      09-25-2007, 12:26 PM   #143
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Quote:
Originally Posted by Park2670 View Post
I thought that the DPs were supposed to add power. Whats all the hype for then?
Well I said "feel" I need to redyno to see if I did actually loose power. I bet i did tho, I added a restriction / more back pressure.

Ill redyno to check it out.
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      09-25-2007, 01:44 PM   #144
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So your spool-up times did not change? Interesting...

I was pretty sure that stock DPs were large enough for our tiny turbos; however, I did assume faster turbo spoolup times.

My section 1&2 piping comes on the 26th so we will have some soundclips of full meisterschaft system in comparison to stock and section 3 only.
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      09-25-2007, 04:51 PM   #145
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Your current exhaust sounds very raspy. The sound quality (i.e., sound note) of the OEM exhaust is excellent, and it would be great if we could just amplify that a few dBs up without making the car sound like a tuba with spit in it. Ever considered putting the resonators on to attenuate the sound a little bit?
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      09-25-2007, 06:23 PM   #146
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Quote:
Originally Posted by ksfrogman View Post
Your current exhaust sounds very raspy. The sound quality (i.e., sound note) of the OEM exhaust is excellent, and it would be great if we could just amplify that a few dBs up without making the car sound like a tuba with spit in it. Ever considered putting the resonators on to attenuate the sound a little bit?
can a resonator be custom made and altered? what i ean is can a muffler shop build a rosnator and tes the sound if they dont like it, alter something on it, and produce a new sound? and keep kinking it until you get the sound you desire? or is it something entirly different.
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      09-25-2007, 06:27 PM   #147
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Quote:
Originally Posted by retrodrive View Post
So your spool-up times did not change? Interesting...

I was pretty sure that stock DPs were large enough for our tiny turbos; however, I did assume faster turbo spoolup times.

My section 1&2 piping comes on the 26th so we will have some soundclips of full meisterschaft system in comparison to stock and section 3 only.
Well im not 100% sure about spool times without data logging it in. But it seems like it when im looking at the gauges. Even the over boost feature with the v2 is the same.

Good luck im sure youll like it.
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      09-25-2007, 06:28 PM   #148
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Quote:
Originally Posted by ksfrogman View Post
Your current exhaust sounds very raspy. The sound quality (i.e., sound note) of the OEM exhaust is excellent, and it would be great if we could just amplify that a few dBs up without making the car sound like a tuba with spit in it. Ever considered putting the resonators on to attenuate the sound a little bit?
Well that was 1 exhaust back but ya i fixed it. The sounds is ridiulously loud. I would have to agree the stock exhaust has a great sound only if you could amplify it.
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      09-25-2007, 06:32 PM   #149
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Amplifying the stock exhaust. This is what Meisterschaft section 3 does. Amplifies the volume slightly and makes it sound a litte more F1ish.
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      09-25-2007, 06:35 PM   #150
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Ok anyways im back from the shop.

I got the new clamps in, no more exhaust leaks and we tried something else for all you high flow guys out there.

I put high flow cats in the DP's. And the car sounds amazing...

Heres a quick clip of it, on the take off I only reved to 5k and shifted. (traction control was on so you can hear how it sounds)

The drone is so minimal its nice. High flows FTMFW.

Sorry about the bike, my friend was trying to be a jerk and ruin the clip.

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Last edited by Walked U; 09-25-2007 at 06:58 PM..
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      09-25-2007, 06:41 PM   #151
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Quick pictures



Took off those clamps...





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      09-25-2007, 07:34 PM   #152
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wow fuckin' sick, so are these stock dp's with high flow cats or new dps with high flow?

thanks for the continued documentation btw
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      09-25-2007, 07:53 PM   #153
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nice, would love to know as well!
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      09-25-2007, 08:00 PM   #154
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if it is an aftermarket dp please point us int he right direction w/ a brand =P
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