Weird exhaust tips rattle

saq85

Registered User
Mine does the same thing. Dunno if there is a problem or its normal...
 

nil538

Registered User
If it's a standard s3 exhaust could be the flap in the left hand tail pipe gone lose and rattling around
 

-Ju-

Well-Known Member
VCDS Map User
It'll be the valve in the exhaust Sanni, had the same issue on my old 335i, only when cold mind went away when it warmed up
 

S3_Sanni

Active Member
VCDS Map User
It'll be the valve in the exhaust Sanni, had the same issue on my old 335i, only when cold mind went away when it warmed up
Mine does it when warmed up too Julian.. Will it still be the valve in exhaust?
 

-Ju-

Well-Known Member
VCDS Map User
How far back from the end is the valve, can you see it or give it a rattle.
It is the only moving part in the exhaust so it's the most likely
 

S3_Sanni

Active Member
VCDS Map User
Very similar noise. Looks to be the same. Have you had a look to see what it could be?
 

saq85

Registered User
nah, its been like that as long as i remember i thought it was normal lol.
 

leshkin

Hold my beer...
VCDS Map User
Noise not bother you? Im getting it sorted this week hopefully

Let us know how you get on and what the root cause was mate. I'm sure that I'm not the only one who wants to know more :)
 

S3_Sanni

Active Member
VCDS Map User
So for the ones who have this annoying rattle!! Went down to BCS today and they checked the exhaust out. Turned out to be a spring inside the butterfly valve causing the metallic rattle sound. All fixed now and the noise has gone.

Had another noise i told them about - exhast hitting a small screw which was noticed today under hard driving. They also adjusted the exhaust for me so that doesnt happen again. Offered to pay but didn't take a penny!! Excellent service for them cant fault them one bit.. Exhaust sounds beautiful under full boost too :)
 
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