2 fault codes cm870

[marek4792]

Try pressure testing your intake system and spraying soapy water on your intake joints/ hoses because 99% of boost leaks are mostly from the joints or undertightened clamps at least with my luck. Exhaust manifold / turbo /egr can cause overspeed too! I've also found out with Unilever that putting big power into a CPL That's not designed for it can do that as well in lower elevations. Mine seems to love doing it at 6000+feet elevation due to exhaust manifold slip joint leaks.