As long as IK/KH/Q/W/T16/20L (Original 1.1mm) once is gapped to 0.8mm => more power and performance can be expected (immediate effect after installed).
Measurement of plug gapping to 0.8mm will be shown to buyer during order collection.
A raft of changes to Formula One's regulations has been decided upon by the FIA's World Motor Sport Council (WMSC), in order to improve racing and tidy up a number of loose ends.