whats the oem plug that goes in these puppies. i've been running NGK and i'm thinking of trying that champion double platinum. whats good in the 5-8 dollar a plug range?

 

Champs are OEM and VERY recommended.

However given your SC you should run a cooler spark. Do some reserch but find a cooler spark than OEM. I am running Bosch in my SRT. If your spark is to hot you stand the chance of pre-ignition which is VERY bad with a FI system.

 

And dont they say that the Hemis dont like platinum??

 

They run cooler, he needs a cooler spark with FI if he likes his internals.

 

Buy a cooler range plug but NOT platinum.

Platinum is good for longevity -- it lets automakers specify those 100k mile tuneup intervals. It is crap for spark though, which is what you need.

Go with a good copper plug. I've run NGKs in forced induction setups for 15 years and that's what'll go in my truck when I do the plugs & wires soon.

 

i have always been told Copper champions... i also heard that with f/i you just have to gap them differently....

 

With the boost you're using, NGK 4306s will probably do nicely, maybe even cooler.

 

I WAS GONNA CHANGE MY PLUGS BUT THEN Let me finish the sentence.....
I traded my gasser in for a diesel[8D] **Diablo runs like hell**

 

If it misses under boost then a smaller gap would help. However, you want to run the widest gap you can without causing a miss so if it works at that boost with the OEM gap, leave 'em there.

I imagine it'd be a PITA to re-gap 16 plugs too!

 

I was told by a number of people to only run platinums in the hemis. because the ignitions system voltage is so high that it will just burn out a regular plug, and that's why they say to do them at 36,000 or what ever. not cause there carboned up but becasue there worn out from the voltage. i don't know how much truth there is to it but that's what i've heard. also was told if i was going to switch plugs to spend the money and go with the NGKs. i personaly run those in everything i own besides my truck. i'm not a big fan of champion plugs. have had problems with them incars and toysin the pass