these things are sick very expensive but sick if u have a turbo or high horsepower car and want a little more then these would be ur answer these allow more air an fuel to be put into ur combustion chamber which equalls more powerhttp://www.pulstarplug.com/
well on their site they have some videos of the performance i havent looked on youtube to see if anyone has tried them on a dyno for real results
yeah my dads boss has a race car an i told him bout them so he might try them he is running race fuel an putting out 680 hp so if they give him more power then they shall give us some power also on their site if u click on the test results page they give u some info their as well
probably they put them in a stock 350z so they will help no matter what they are burning the fuel better and faster
d-sport magazine just did a pretty big spread about these pulstar plugs....they did dynos on an ITR 350z and EVO. ITR gained like 2whp i think..the Z gained like 3 and the evo gained like 5whp i believe those were the numbers...
well i think they will give u more if u have more like intake manifold and more fuel so it can burn it up u know