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Old 12-24-2012, 03:06 PM   #2
Scooby Specialist
Member#: 293006
Join Date: Aug 2011
Chapter/Region: SCIC
Location: San Diego
2010 Impreza 2.5i
Newport Blue


Originally Posted by Zvbosch View Post
I got a P0420 so I took my car into the dealer and they replaced my cat for free since it was under warranty but now I can smell exhaust when idling and there is a rattling sound at about 3k rpms. Any ideas?
Does the rattling get louder as u go faster? I'd check for loose heat shield.
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