Passat sounds louder after heater core replace

BrohamTDI

New member
Joined
Jul 23, 2018
Location
USA
TDI
Passat '14
I just recently had my heatcore replaced and AdBule Heater replaced. After the service repair my TDI sounds lounder at idle and drives roughter. Is this normal - if not what do you think could contribue to this increase of sound at idle ?



Passat - 2014 SEL TDI - 62000 miles
 
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