I'm getting ready to change my spark plugs. I've been using AC or Bosch standard configuration plugs. I keep seeing ads for the SplitFire plugs and even some Bosch 2 or 4 conductor plugs. Rather than blow the cash and find out for myself, does anyone have anything good to say about these style plugs? I know how they're SUPPOSED to work, but do you actually notice a power gain or any increased fuel efficiency?
Either way, does anyone have some advice on where to set the gap for a typical 5.7 liter with 155k miles on it? I've just been using the gap that Checker Auto Parts gives me with new plugs.
Thanx, Derek