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Flavor 987S · 01-19-2016, 02:37 AM

Most likely a bump from the exhaust. IIRC, the anniversary edition had a sport exhaust system as part of the bundled options package. I don't think it came from anything unique like; DME, headers or plenum.

01-19-2016, 02:37 AM	#2
Flavor 987S Registered User Join Date: Jul 2009 Location: Arlington Heights, IL Posts: 1,561	Most likely a bump from the exhaust. IIRC, the anniversary edition had a sport exhaust system as part of the bundled options package. I don't think it came from anything unique like; DME, headers or plenum.