5310 is the 22 heat range, 5304 is the stock 20 heat range

Denso 5310 Denso Iridium Power Spark Plugs

Denso 5304 Denso Iridium Power Spark Plugs

Here's the whole range of Denso iridiums
Denso Iridium Power Spark Plugs - JEGS

 

oh awesome thanks

 

I purchased some IK-24s awhile back... I'm waiting for the Flashpro and will spring for the HKS Dual Power when I can do some tuning. That's if I can figure out what I'm doing to tune with the Flashpro...

 

I got yo back, Jack

 

I know you aren't sold on the Dual Power but consider that you can use very wide gapped cold plugs.. The Mallory Hi Power box along with a Hyper Tech programmer on my GMC Safari V6 was a lot if fun...

 

Well, I suppose we'll find out!

Do you think that it would be a good idea to make the switch after you are up and running with all the other changes before having to worry about a modified ignition delivery as well?

 

Without a doubt... I'm still needing to make a duct to a fan under the KKWSC intercooler and sell the FMIC I was going to try and use.. The BBeatrush panel may need to be cut or I can duct from the fan to a hhole in the left front fender well and use rivet on louvers I was given bby the guy I got my hood louvers from.. I still need an oil cooler too. T As Roseanne Roseannadanna said, It's always something.