a standard spark plug should last 10-20K KM...those better/performance type should last 30-50KM....
Spark plug is wear and tear part...
Also life span of spark plug depend on your engine condition...if your engine makan engine oil / wrong tuning then your spark plug will wear out faster.
Any guides out there how to convert my current standard seimens ems700 ecu to a motec m400 ecu do i use back my current sensors in the engine or i need to replace them any guide to progam it to get the standard...