I'm sure I've posted this picture before but here are three plugs I tested in my 470 with the Trick Flow heads. These are all the same heat range and the same brand. Standard, projected and super projected. I use the super projected just because it seems like it should be better but I did not notice any difference on the dyno between the three plugs.
Sure would like to see a comparative timing strap read on those three plugs after a good pull. Sure seems that the projected plugs would be risky in a power adder situation.
