Is this issue strictly related to the turbo engines, or could this also be applicable to the naturally aspirated engine as well. Mine (528i) also seems to lag a bit on initial acceleration. It seems a tad lazy starting from a stop. In sport mode, however, there is no lag or laziness whatsoever. Just wondering if it's something that needs to be adressed on my particular model.

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2011 BMW 528i- Black Saphire Metallic, Black Leather, Prem. Package, Prem. Package 2, Convenience Package, Cold Weather Package, Sport Package,Sport Auto Trans, Anthracite Wood & Headliner, Xenon Lights, Split Fold-down Seats.