Applause Engines (HD-E typed) don't have a VVT-System.
The Engine sonds rough when cold-started (noise like a blown crankshaft/rod bearing) this noise disappears after several minutes. When cold particulaly this engine shouldn't be reved to high to prevent bearing damage.
The whistle sounds comes probably from the throttle body
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VAG & Subaru Fremdgeher.... weil!
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