Ill say this, i got a set of 6 high quality ngk platinun tips for like 60 bucks
I buy the NGK laser iridium spark plugs. About 100 dollars.
I decided to give the NGK Rutheniums a try earlier this year after reading about them on this thread I've been happy with them so far, the engine ran noticeably smoother than with the old plugs (but that could have also been simply due to new plugs).
I replaced mine last week and used anti-seize lightly. No problems that I see.
Replace the plugs with NGK or Denso.
Denso iridium plugs, no more no less and no exceptions.
I have the OEM RS7 plugs in my car for 40,000km ever since going to stage two with zero issues and will buy them again.
denso iridium. do them and they’ll be good for another 200k km or more
For the intake i would recommend k&n filters systems, racing plugs are not even worth it, better look it up some NGK iridium
I got some phony Denso marked spark plugs
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