Previously my car had been misfiring up top, only when going WOT. I replaced the stock plugs at 21k with Denso IKH24 plugs. That lasted till now, 33k miles, and I'm starting to misfire again at WOT.

I ordered some more plugs today and I'll swap them out when I get them. I'm wondering how my plugs look do you guys. I'll attach some images and let me know how you think they look.

 

Plugs look fine. IMHO I say swap them out every 15k and stick with the stock NGK plugs unless you need to go a step colder.

You can pick them up from RSD for about 50 bucks.

 

i would just get the coppers...........they work the best and are only 8 bucks for a set.

 

Do they even make copper equivalents for the IX?

 

Thanks, I'm pretty sure he was talking about the VIIIs
and didn't realize I had an IX.

 

Yea they look fine and I love only having to pay $5 for my plugs

 

Dang, well this sucks since I just bought new plugs LOL.

 

So when you are disconnecting the battery during the change, Do EVO'S loose their tunes??
Newbie here..
I am trying to install IKH24. I have Sparktech.
Running about 28 psi on FP red on built block. 93 tune

 

No you will not loose your tune.

Idle sometimes will be funky for the first couple drive cycles until ECU relearns

 

Thanks
Those plugs seem to be right? I see alot of people using them.