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wait wait, stop muddling the water. Inspection I and II and valve adjustments only apply if you drive an M.
To answer the original question, don't bother with aftermarket warranties. These cars are pretty bullet proof. Describe your issue a little better and I'm sure some of the more experienced Z4 guys will chime in with suggested solutions.
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Gruppe M CAI / Euro Headers / Rogue Engineering X-pipe / RE Diablo Exhaust |