Has anyone had any experiences with those? I spotted some in a local auto shop; made by "Denso" claimed those can boost up quiet a few HPs.

 

my understanding is that our stock plugs are pretty good already. i was thinking about swapping them out a while back, but too many people told me to stick with the originals.

 

Denso Iridium plugs work EXTREMELY well on Accord V6's and some other Honda's.

But serin is right. Apparently the VQ stock plugs are already pretty good and from what I've read nobody has gotten any gains from Denso Iridium's on a VQ engine.

I had them on my Accord V6 and they definitely helped, but apparently not on the Maxima.

 

I see, well, I might still pick some up for my sister's accord and then I can try some on my max!!!

Thanks for the info guys