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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 > Is this DP Rattle? If not, what is it?



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      02-15-2013, 12:42 AM   #1
Bimmer Barney
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Is this DP Rattle? If not, what is it?

I've had my BMS downpipes installed for months now without any kind of rattle. About 2 weeks ago I started getting a vibration rattle when at low RPM and rolling into the throttle in a high gear. We're talking like 10-25% throttle and only at low RPM, basically when I'm bogging the car a bit. I felt around the dash area to see if something was just rattling; like trim or something. Now I'm wondering, could my downpipes have started to rattle somehow? Looking for someone who has had downpipes rattle to either confirm or deny this suspicion before I decide to crawl underneath the car.



http://i303.photobucket.com/albums/n...ps987ae177.mp4
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      02-15-2013, 01:41 AM   #2
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http://i303.photobucket.com/albums/n...ps987ae177.mp4
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      02-15-2013, 11:38 AM   #3
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112 views but no replies? Come on guys
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      02-15-2013, 12:18 PM   #4
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I don't think that noise is from the downpipes. I had a slight rattle from my downpipes (they were adjusted and rattle went away) and it sounded nothing like that. I could be wrong, though.
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      02-15-2013, 01:23 PM   #5
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I just spoke to my mechanic and he said to check the top strut brace center bolt. He said it's a common problem for it to come loose on the E90, Z4, and E60. I'll take a look this weekend.
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      02-15-2013, 04:28 PM   #6
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Does not sound like the wastegate rattle I had before changing my turbos.
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      02-15-2013, 07:34 PM   #7
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Quote:
Originally Posted by Quebequer View Post
Does not sound like the wastegate rattle I had before changing my turbos.
Good, because that would be an entirely unrelated issue to my post. But thanks for confirming.

Now back to the DP rattle :P
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      02-17-2013, 12:36 AM   #8
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video does not work
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      02-17-2013, 01:10 AM   #9
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Quote:
Originally Posted by Bimmer Barney View Post
I just spoke to my mechanic and he said to check the top strut brace center bolt. He said it's a common problem for it to come loose on the E90, Z4, and E60. I'll take a look this weekend.
That could very well be. I would start there too. Kind of sounds like my blower fan when its mad haha...though it varies with RPM, right?
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      02-17-2013, 03:10 PM   #10
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Quote:
Originally Posted by Bimmer Barney
Quote:
Originally Posted by Quebequer View Post
Does not sound like the wastegate rattle I had before changing my turbos.
Good, because that would be an entirely unrelated issue to my post. But thanks for confirming.

Now back to the DP rattle :P
Not related? lol ok
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