any one tried :
Denso Iridium plug 5304 IK20 0.044 $11.99

don't no if its has any good reviews on this... and is this price worth it?

 

I'm using them in my Integra and they are really great. Good power, economy, durability, idle etc. But read the post above, about Bosch plugs and I think you'll see the consensus is to use the factory NGK's in Maximas.

 

iridium plugs are nice but there is a concern about teh densos having a different resistance than the NGK's. NGK makes an iridium plug that is just as high of quality and has the same resistance spec as the factory plugs. when i looked at iridiums the NGK's were cheaper anyway.

 

ohh ok i actually purchased some over the net at sparkplugs.com and it was 6.99 or suttin each i believe its the same as stock

 

I would go with NGK iridium IX. For some reason our computer is real fussy about what we put in for sparkplugs. A Nissan service guy who seemed to know his stuff, told me that different makes of plugs have a different resistance, and some customers who used different plugs had issues with stumbling/missing with the ignition. I didn't buy my plugs from the dealer either. One of the service guys was having a cigarette, so I figured I'd bend his ear and try to learn something new.

 

bottom line:
unless you are FI or heavily modded, stick with the stock Nissan plugs or similar NGK's.

it has been widely proven that other plugs will not "help" anything on a low-mod maxima, but can "hurt" performance.

stick with stock....