Icing on the cake
They are the icing on the cake in a modified engine (excluding ignition mods). These plugs are especially good in an engine that doesn't have a centered in combustion chamber plug or dual plugged head.
Spark Plugs
2020-01-03T21:36:25+00:00
Jeff B., Verified Buyer
https://pulstar.com/testimonials/icing-on-the-cake/