03-05-2019, 08:06 AM
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#12
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Member
Join Date: Oct 2017
Drives: 2013 Limited Subaru BRZ
Location: NJ
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Quote:
Originally Posted by Ultramaroon
When the engine is up to temp and left to idle, the fueling system switches from port injection to direct injection. It can be disturbing for the unsuspecting owner because it truly makes a racket. Viewing the engine from the front, the DI pump is just behind the oil fill cap.
Here's someone else's video clip capturing the moment where it switches over.
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THATS EXACTLY THE SOUND!
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