Just got my packet today from STAR, and it is now law; starting from Sebring on, it's mandatory, IF you want to earn series points, that is...
I'm not quite sure from the wording if this is just Pro Series, or inclusive of the regional series as well.
For years I've heard the stories: "Yeah man, we had it on the dyno, took a reading, swaped plugs and took another reading and the ______ plugs made 1.5 more horsepower!"
You guys probably have heard simillar stories as well.
Anyone care to comment on this? I've no personal experience, although I did run the Bosch's last year at Laguna after (wrongly) suspecting that the NGK 115's I had in were wicked/fouled. I guess as everyone will have the same plugs we'll all be in the same boat...
Coop