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.
Power is relative, at least for petrol heads, and warp speed just doesn’t cut it for some. The Canadian owner of this Chevy Camaro probably wouldn’t fall into that...