BMW X5 G05 B58 Carbon Buildup: Walnut Blasting Costs vs Prevention

Before and after comparison of carbon-clogged vs clean intake valves on BMW X5 G05 B58 engine showing walnut blasting effectiveness for carbon removal

For many BMW X5 G05 owners between 2020 and 2025, the smooth power delivery of the B58 turbocharged inline-six engine comes with a hidden flaw: intake valve carbon buildup. Unlike older port-injected engines, the B58’s direct fuel injection system bypasses the intake valves, leaving them vulnerable to carbon deposits from blow-by gases and oil vapours. […]