The heat range of a plug should be matched to the engines used
to ensure proper spark plug thermal performance. In our testing and
years of use, these plugs work excellent on both lightly modified
and engines running boost up to 16lbs.
Despite the claims of other "fancy" types of plugs, these have
shown the best performance on the Dyno as well as a smoother idle
and plenty of lifespan.
Under hard performance driving conditions, and or boost-
checking spark plug gap and/or replacing these plugs on a regular
20-35k mile intervals is recommended for best results.
We always keep these in stock for whenever you need
VAC Tech Tips:
-These plugs work well for bolt on turbo charged M5x/S5X and many
-These plugs are 1 heat range colder than 96-99 OEM specs
-Gap is .32 stock, you may set gap at .28 for best results with
higher boost levels
is currently empty