!!fixing Wastegate Rattle!! From The Exhaust

Mr.335iCoupe · 02-23-2010, 05:48 AM

About 5 months ago, my 09 335 driver side exhaust tip sounded like a penny in a tin can. This rattle only occurred during idle and when I go over 2000 RPM. I found out a while ago that it was actually the flap that opens and close and that the control arm that holds the flap in place was lose ( it was hanging lower than normal thus making the flap rattle against the exhaust tip ). I read the wastegate rattle thread and I'm not sure if I'm correct, but I see that there are two kinds of rattles. One from the engine bay ( control arm ) or one from the exhaust flap. I brought it to the dealer and hopefully they'll be able to fix it. Til then, I'll see if it is fixed and I'll update you guys on what the problem was.

dmurray14 · 02-23-2010, 06:51 PM

Well, that wouldn't be a wastegate rattle if it's on your exhaust! Good luck.

blisstik · 02-23-2010, 06:58 PM

You can't fix wastegate rattle from the exhaust. LOL.

Rattle from the exhaust is normal (during startup) since there's a silencer valve. Now, rattle from the engine area is a different story.

Mr.335iCoupe · 02-24-2010, 04:30 AM

I'm a bit confused now

Does that arm that controls the flap from opening and closing have any relation with the wastegate?

Mr.335iCoupe · 02-24-2010, 04:40 AM

Quote:

Originally Posted by darklocust

You can't fix wastegate rattle from the exhaust. LOL.

Rattle from the exhaust is normal (during startup) since there's a silencer valve. Now, rattle from the engine area is a different story.

That's exactly why my service adviser said. I'm pretty sure it's not normal. It might be common but it's an issue that should be addressed because the rattle doesn't only happen during idle, it comes back whenever you the rev goes over 2000. It gets real annoying and I'll try to record it tomorrow. I never had this issue with my previous 335. I found the issue to be a lose piece that holds the flap in place. ( you can see the little tip that protrudes from the bottom of the driver side exhaust tip ) I'm sure some 335 drivers can chime in about their exhaust sound when the flap is closed. So far, the dealer is going to replace the left side of the exhaust, muffler down or wherever it unbolts from.

Ferre86 · 02-24-2010, 08:09 AM

i m having wastegate rattle on my turbos, my shop tired to fix it but after awhile it appears again and now getting worse , only fix should be replacing the turbos i think.

TurboBimmer · 02-24-2010, 08:24 AM

Quote:

Originally Posted by Mr.335iCoupe

I'm a bit confused now

Does that arm that controls the flap from opening and closing have any relation with the wastegate?

No, that's two totally different things. The wastegates are part of the turbos, located in the engine bay.

A worn out muffler flap has nothing to do with it.

blisstik · 02-24-2010, 11:55 AM

I guess your fix would be to fix the flap in the exhaust or replace it completely. You can disable that tho using the golf tee mod.

http://www.e90post.com/forums/showthread.php?t=80661

Mr.335iCoupe · 02-24-2010, 11:25 PM

What's that arm that controls the flap from opening and closing connected to?

R N M · 03-28-2010, 03:27 AM

Mr.335iCoupe,

Any update on this? Im having the same exact problem with my 09 335i.

My car sounds like crap.

vase330 · 03-28-2010, 11:45 AM

Our cars all sound worse that a Hyundai that costs less than half as much. This is a major gripe. BMW couldn't do better than this really?

They claim its a Turbo and expected. I have had Toyota MR2 Turbo, Toyota Supra Turbo, and Mitsubishi Eclipse Turbo in the 90s and none of those cars sounded this crappy. This was a major disappointment for me on the E92. IMO a car as expensive as this should not sound this crappy.

R N M · 03-28-2010, 07:02 PM

Quote:

Originally Posted by Nick.CBR

There is an actuator behind the left brake light assembly that controlls the flapper. You can actually just unplug it and have the flapper hang open but you'll throw the flapper code (no lights).

Nick

I did this today bec i couldnt take my car sounding like crap anymore.

So far so good.....no more rattling noise, and deeper exhaust note.

MKE_M3 · 03-29-2010, 07:12 PM

I have the stock exhaust and my car sounds fine. what is crappy about it? i actually get compliments on how the car sounds from serious car guys that do autocross, road course racing, in heavily modified cars.

Donald-335i · 03-29-2010, 08:58 PM

you aint fixing no WGR With exhaust lol

stimpy · 03-29-2010, 09:09 PM

Hey guys I fixed my wastegate rattle by filling up my headlight washer fluid.

Donald-335i · 03-29-2010, 09:49 PM

Quote:

Originally Posted by stimpy

Hey guys I fixed my wastegate rattle by filling up my headlight washer fluid.

Ferre86 · 03-30-2010, 11:07 AM

Quote:

Originally Posted by stimpy

Hey guys I fixed my wastegate rattle by filling up my headlight washer fluid.

make me one also

UAP1 · 03-30-2010, 12:11 PM

Does this fix work with aftermarket exhaust? Didn't know if the flap was only on stock cat back. I have HKS and getting that same sound at idle and low RPM. Coming from exhaust not motor.

Mr.335iCoupe · 04-01-2010, 12:05 AM

Quote:

Originally Posted by R N M

Mr.335iCoupe,

Any update on this? Im having the same exact problem with my 09 335i.

My car sounds like crap.

Yeah, dealer replaced the entire driver side exhaust.

k20z3allmotor · 04-01-2010, 12:11 AM

i fix waste gate rattles, pm me

02-23-2010, 05:48 AM	#1
Mr.335iCoupe Q(0_0Q) 65 Rep 581 Posts Drives: e92 335i Join Date: Jul 2008 Location: San Francisco iTrader: (5)	!!fixing Wastegate Rattle!! From The Exhaust About 5 months ago, my 09 335 driver side exhaust tip sounded like a penny in a tin can. This rattle only occurred during idle and when I go over 2000 RPM. I found out a while ago that it was actually the flap that opens and close and that the control arm that holds the flap in place was lose ( it was hanging lower than normal thus making the flap rattle against the exhaust tip ). I read the wastegate rattle thread and I'm not sure if I'm correct, but I see that there are two kinds of rattles. One from the engine bay ( control arm ) or one from the exhaust flap. I brought it to the dealer and hopefully they'll be able to fix it. Til then, I'll see if it is fixed and I'll update you guys on what the problem was.
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02-23-2010, 06:51 PM	#2
dmurray14 The Stig 31 Rep 1,232 Posts Drives: Quickly Join Date: Apr 2005 Location: US iTrader: (1)	Well, that wouldn't be a wastegate rattle if it's on your exhaust! Good luck. __________________
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02-23-2010, 06:58 PM	#3
blisstik Lieutenant Colonel 151 Rep 1,677 Posts Drives: E92 Join Date: Jul 2009 Location: California iTrader: (14)	You can't fix wastegate rattle from the exhaust. LOL. Rattle from the exhaust is normal (during startup) since there's a silencer valve. Now, rattle from the engine area is a different story.
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02-24-2010, 04:30 AM	#4
Mr.335iCoupe Q(0_0Q) 65 Rep 581 Posts Drives: e92 335i Join Date: Jul 2008 Location: San Francisco iTrader: (5)	I'm a bit confused now Does that arm that controls the flap from opening and closing have any relation with the wastegate?
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02-24-2010, 08:09 AM	#6
Ferre86 Captain 38 Rep 944 Posts Drives: E93 M3/H2/SL350/Panamera 4/ Join Date: Mar 2009 Location: Turkey iTrader: (0)	i m having wastegate rattle on my turbos, my shop tired to fix it but after awhile it appears again and now getting worse , only fix should be replacing the turbos i think. __________________ http://www.youtube.com/user/Ferre86 \| e93 M-DCT ESS VT2-625 \| Akra Slip-on \| Challenge Race Catless x-pipe \| Challenge front lip \| Challenge Diffuser \| Carbon front grilles \| defi gauges control unit \| Macht Schnell gauge panel \| E93 M3 trunk Spoiler \| IND Carbon Fiber Side Markers \|
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02-24-2010, 11:55 AM	#8
blisstik Lieutenant Colonel 151 Rep 1,677 Posts Drives: E92 Join Date: Jul 2009 Location: California iTrader: (14)	I guess your fix would be to fix the flap in the exhaust or replace it completely. You can disable that tho using the golf tee mod. http://www.e90post.com/forums/showthread.php?t=80661
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02-24-2010, 11:25 PM	#9
Mr.335iCoupe Q(0_0Q) 65 Rep 581 Posts Drives: e92 335i Join Date: Jul 2008 Location: San Francisco iTrader: (5)	What's that arm that controls the flap from opening and closing connected to?
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03-28-2010, 03:27 AM	#10
R N M Colonel 3631 Rep 2,051 Posts Drives: F80 M3 Join Date: Apr 2009 Location: NYC iTrader: (0) Garage List 2016 BMW M3 [0.00]	Mr.335iCoupe, Any update on this? Im having the same exact problem with my 09 335i. My car sounds like crap.
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03-28-2010, 11:45 AM	#11
vase330 Colonel 102 Rep 2,760 Posts Drives: 19 E63S; 15.5 RangeRover ATB Join Date: Jan 2007 Location: Arlington, Va iTrader: (1)	Our cars all sound worse that a Hyundai that costs less than half as much. This is a major gripe. BMW couldn't do better than this really? They claim its a Turbo and expected. I have had Toyota MR2 Turbo, Toyota Supra Turbo, and Mitsubishi Eclipse Turbo in the 90s and none of those cars sounded this crappy. This was a major disappointment for me on the E92. IMO a car as expensive as this should not sound this crappy. __________________ E92 335 \| Space Gray \| Saddle Brown Dakota \| Dark Burl Trim \| ZPP \| ZSP \| AT \| Idrive \| 6FL \| FBO \| Dinan CAI \| Quaife LSD \| STG3 PROCede.
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03-29-2010, 07:12 PM	#13
MKE_M3 Lieutenant Colonel 65 Rep 1,705 Posts Drives: 2011 e90 M3 Join Date: Feb 2009 Location: Milwaukee, WI iTrader: (0)	I have the stock exhaust and my car sounds fine. what is crappy about it? i actually get compliments on how the car sounds from serious car guys that do autocross, road course racing, in heavily modified cars.
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03-29-2010, 08:58 PM	#14
Donald-335i Banned 191 Rep 3,588 Posts Drives: The Hoes Crazy! Join Date: Nov 2008 Location: Central NJ iTrader: (13)	you aint fixing no WGR With exhaust lol
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03-29-2010, 09:09 PM	#15
stimpy Colonel 167 Rep 2,210 Posts Drives: E92 335i Join Date: Feb 2008 Location: Phoenix AZ iTrader: (7)	Hey guys I fixed my wastegate rattle by filling up my headlight washer fluid.
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03-30-2010, 12:11 PM	#18
UAP1 www.UltimateAutoPortal.co m 60 Rep 556 Posts Drives: 2007 BMW 335i. Few mods. Join Date: Mar 2010 Location: Texas iTrader: (3)	Does this fix work with aftermarket exhaust? Didn't know if the flap was only on stock cat back. I have HKS and getting that same sound at idle and low RPM. Coming from exhaust not motor.
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04-01-2010, 12:11 AM	#20
k20z3allmotor Enlisted Member 10 Rep 34 Posts Drives: civic si Join Date: Apr 2010 Location: ventura iTrader: (0)	i fix waste gate rattles, pm me
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