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10-15-2012, 02:10 PM
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#1591
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EL JIMMY NEURON
Drives: Jet Black E90
Join Date: Aug 2012
Location: in the Napa Valley/SJ...
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Quote:
Originally Posted by Route 16
Haven't turned my car on in a week and after a decent warm up then revving, I can hear a hissing or whooshing sound when on and off throttle. Any ideas? I don't see any condensation or leaks.
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It's the Turbo. 
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