Why do you want to change the heat range on the plugs? Everything is programmed and calibrated to work together.

 

These are the only spark plugs I’d use in an 06 Pilot. NGK Laser Iridium being my first choice. The NGK IX is ok but just know that they are only rated for 60k miles.

 

Thinking on this one I just have to read up on it but Champs been around for years

 

I would rather leave old OE plugs in than replace with junk aftermarkets. NGK/Denso or go home.