Yesterday I was able to test the Denso Iridiums against Bosch Plat 4's and Spitfires and NGK's. The Denso where the most beautiful and constistant spark I have ever seen. I will take Pics and post in a few. Split Fires are the biggest Joke I have ever seen.

 

Where did you buy those Denzo Iridiums?
Are they the 1-step colder than stock?

 

You can get them on-line. I didn't get them yet. They were supplied by my school (UTI). The should be 1 step colder. Does anyone know anything about Zex plugs.

 

BUMP - I'm very curious to see some pics. Actually I'd really like to see Dyno plots between NGK and Denso.

 

I have Splitfires in my car, why do you say that they are the biggest joke? I'm interested in knowing that, maybe I should switch my spark plugs again.

 

Definately switch them. There not even Platinum tipped which means our ignition system will eat that plug in no time.

 

The splitfires have a reputation for cracking under harsh conditions.

 

Now does this apply only to Maxima's or does it apply to my Euro as well? If it does, I'm gonna have to ask my Bimmer board the recommended spark plug as Bosh Plat 4 don't work well on our cars for some reason.

 

yea, i want to know how the Bosh Plat 4 work for our maximas...

 

Bosch +4's will work and I've had them but my car didn't feel the same with the NGK's. Stick with OEM NGK plats.

 

pesonaly i wouldnt put a german made plug in a japanise engine so a search on it ppl have posted alot of stuff about the bosch plugs, id stick with the stock NGK plugs

BTW. i just ordered me some new NGK plugs

 

what about the NGK Iridiums? how do they compare to the NGK Platinums and other plugs?

 

but then again I got a VG so it dont matter 2 you guys

 

i'm also very interested in seeing how the denso iridiums do...