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Originally Posted by S800vxr
X5M is slightly different as the tu engine variant in the M6/5 used inlet valve lift control for throttling rather than a traditional butterfly arrangement which the X5M uses... Might have changed for 2016 though as emissions are better on the tu variant.
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F85/86 use a new variant with Valvetronic as on the M5/M6. Few additional changes as well.
G11/12 750i with the latest N63 uses twin-scroll turbos as well so it too has the cross bank manifold.
One common thing between them is the electric exhaust flaps. Just my opinion but I think they probably programmed a little offset pulsing back in for acoustic masculinity
