has anyone used denso iridium plugs on their P5? if so, has there been any problems or better yet gains from the stock plugs.

 

wont get much out of them, just go with ngk thier the best, no platinum or denso, spendy not really great though, if you want adds in your power band from you spark, just get a ice pak

 

i have it in my gts and i was wondering if it would help the P5 at all. what kind of plugs are in there right now?

you mean a cai. she would never allow me to put that on her car cause she hates it in mine. eventhough i think the sound when it hits lift all the way to 8300rpms is the best sound you'll ever hear from an engine. sounds like a champ car going into a straight away on long beach.

 

The only thing "fancy" spark plugs might do is last longer. And with 30,000 mile change intervals for the stockies, the extra cost (5 times the price sometimes) of fancy plugs is a waste, IMHO.

They cannot manufacture "more" spark - same with fancy wires.

You will not notice any difference in power - and if you do, it's your "*** dyno" that's "feeling" it even though it doesn't exist.

~HH