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BMW 3-Series (E90 E92) Forum > BMW E90/E92/E93 3-series General Forums > General E90 Sedan / E91 Wagon / E92 Coupe / E93 Cabrio > Possible Wastegate Rattle?



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      03-26-2014, 07:52 PM   #1
dbhughes
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Possible Wastegate Rattle?

Hey, so I was out driving some windy roads in Western VA, extremely hilly and heard a bit of odd noise coming from under the hood. Driving in 3rd gear and pretty high acceleration where the turbos were peaking at around 15psi, it sounded as if gravel was hitting the underside of my hood. Pretty audible pinging type sound. I've heard what standard waste gate rattling sounds like and that is not as sharp and clear as what I was experiencing. Any thoughts?
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      03-26-2014, 07:52 PM   #2
dbhughes
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I should note, it's an n55.
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      03-26-2014, 07:56 PM   #3
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How did you know it was at 15 psi. Sounds higher than stock. Are you tuned?
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      03-26-2014, 08:04 PM   #4
dbhughes
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Quote:
Originally Posted by Blackhawk36 View Post
How did you know it was at 15 psi. Sounds higher than stock. Are you tuned?
JB4 on the Map 1. Sorry, maybe it's not at 15 psi.
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      03-26-2014, 08:27 PM   #5
3SPKY5U
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Usually you hear rattle on idle.

Also pretty sure they "fixed" the issue on the N54, never heard of it on a N55.

Check for loose stuff.
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