Well, i have the iridium spark plugs in my evo 9, NKG ILFR7H, well those spark plug are very expensive, i remember in the evo 8 they had also had OEM iridium spark plug but you could use BPR8ES wich is not iridium and is alot cheaper, what cheaper spark plug can i use from NGK that isnt iridium in an evo 9?

 

look and buy them cheap here www.sparkplugs.com - copper is far better at conducting but must be replaced much sooner

 

Not too sure but the 8 is the best bet.

 

evo 9 spark plugs are different from evo8, bpr7es won't fit because the spark plug has a different thread. You need to use replacement irdium plugs since ngk doesnt manufacture irlf no more for the 9.

 

We have denso one step colder plugs in stock if you need some, they are $55 shipped.

 

Get the Denso IKH24, I got mine from ^^ a great guy and awesome fast shipping

 

I'm running BPR07ES in my IX right now... How is that possible???