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Injectors.
They are noisy.
It is just the way they are.
The noise will change as they switch back and forth from port to direct.
Having come from big block V8s that noise still freaks me out sometimes.
The whine is just the result of the tranny being right beside you and having the equivalent to a piece of paper for sound deadening. If used to FWD cars where the tranny is way up front then the noise seems strange when again it is perfectly normal.
Boxer engines usually sound like old Russian farm tractors but you get used to it.
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Racecar spelled backwards is Racecar, because Racecar.
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