So apart from the fact copper plugs are better at conducting heat and electricity and being waaay cheaper. What performance benfits do iridum plugs give? Yes they last longer and are waaaay more expensive but is it worth the extra price?
Currently have heat range 6 itidium plugs on my glanza. When or what bhp do i need to goto heat range 7 ? currently i have hybrid ct9, fmic, decate, wepr mani, exhaust, magnecore ht leads and 1 bar boost