Sparkplug question...

[Chiketkd]

My 'Check Engine' light has been on since I picked up my SVX 4/24 and when I ran the error codes they were for the knock sensor and something electrical associated with it (error codes: P0325 - knock sensor & P0748 - electrical).

I've added STP super concentrated gas/fuel injection cleaner and reset the ECU to see if the light would come back on... It stayed off all day, but on my drive back home I decided to take 'er up to redline and somewhere around 5500 it came back on. I'm thinking that I my engine must have a slight detonation that keeps re-occuring.

Since my fuel injectors are now clean, I can only assume it is one or more of my spark plugs. As I plan on doing a series of NA mods to my car (intake, full exhaust & performance cams) in the coming months, I figured it'll be best to just have all six changed.

What spark plug do you guys recommend that I use? Should I run the stock ones from my Subaru Dealer, or would this be a good time to put something better in?

Thanks!

-Chike