'07 335i with 64k miles, had Cobb stage2+ for a while now.
Things done/replaced
-Turbos
-HPFP
-Walnut blasting
-Spark plugs & coil packs
-Waterpump
-Brake pads + rotors
-Oil filter housing gasket
-new battery
That is about it, still way cheaper than maintenance on the C63 so far. But am anticipating replacing all injectors, the thermostat, clutch, & shocks in the near future, which would be a hefty bill
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