more wastegate noise.

exigejoe · 02-23-2015, 10:06 AM

Just put on a maddad eurosport street, the muffler delete; and notice more wastegate noise (psssshhhh) i was just wondering if this normal? Is this good or bad and am i getting peak boost. Everything is stock but the maddad axleback.
Thanks!!

Solo_M_Tech · 02-23-2015, 11:20 AM

Yes. You are un muffling the exhaust. The rattle was there all along, just the sound was absorbed by the muffler.

mike@x-ph.com · 02-23-2015, 11:34 AM

Quote:

Originally Posted by HooningB2G

Yes. You are un muffling the exhaust. The rattle was there all along, just the sound was absorbed by the muffler.

+1

exigejoe · 02-23-2015, 11:38 AM

No rattling! I read that turbo spool quicker with bigger exhaust diameter and less back pressure.
Is this quicker turbo spooling result in more wastegate noise? Im N55 btw!

Solo_M_Tech · 02-23-2015, 11:46 AM

Quote:

Originally Posted by exigejoe

No rattling! I read that turbo spool quicker with bigger exhaust diameter and less back pressure.
Is this quicker turbo spooling result in more wastegate noise? Im N55 btw!

All turbo noises will be louder with a muffer delete, because you deleted the MUFFLER! common sense. Unless you swapped the downpipe, the axle back has nothing to do with turbo spool rates.

Joebie · 02-23-2015, 11:49 AM

Minor thread jack, but are N55s even susceptible to wastegate rattle?

02-23-2015, 10:06 AM	#1
exigejoe New Member 0 Rep 26 Posts Drives: 2011 135i Join Date: Apr 2014 Location: tacoma iTrader: (0)	more wastegate noise. Just put on a maddad eurosport street, the muffler delete; and notice more wastegate noise (psssshhhh) i was just wondering if this normal? Is this good or bad and am i getting peak boost. Everything is stock but the maddad axleback. Thanks!!
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02-23-2015, 11:20 AM	#2
Solo_M_Tech Brigadier General 1688 Rep 3,140 Posts Drives: 2014 M5 6MT Join Date: Nov 2013 Location: Massachusetts iTrader: (7) Garage List 2014 BMW M5 [0.00]	Yes. You are un muffling the exhaust. The rattle was there all along, just the sound was absorbed by the muffler. __________________ 2014 M5 6MT
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02-23-2015, 11:38 AM	#4
exigejoe New Member 0 Rep 26 Posts Drives: 2011 135i Join Date: Apr 2014 Location: tacoma iTrader: (0)	No rattling! I read that turbo spool quicker with bigger exhaust diameter and less back pressure. Is this quicker turbo spooling result in more wastegate noise? Im N55 btw!
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02-23-2015, 11:49 AM	#6
Joebie Grandmaster 773 Rep 803 Posts Drives: 2018 ///M2 6MT Join Date: Dec 2014 Location: St. Louis iTrader: (0)	Minor thread jack, but are N55s even susceptible to wastegate rattle?
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