Peachy wrote:Thanks Ratty very helpful as usual!!

CrunchyAdams82 wrote:And platinum.
http://bit.ly/1dthEj7
Again, not necessarily the best price..just a quick search. But gives you a rough idea of the price difference.
Some may disagree, but there is no real noticeable difference in performance between the two types. The only difference is that Platinum's will last significantly longer.
In fact, @RattyMcClelland may agree that for just caning it around, or a track slag, coppers or Iridiums may actually give better performance than the Platinum's..

No idea tbh.
Platinum plugs are the only realy ones you need since they will last along time but they are at a high price.
Coppers are super dooper cheap but they dont last as long.
Im currently using one stage colder coppers until i get my Lude tuned since the supercharger and larger injectors and no map will foul the plugs eventually. Using cheap plugs means i can afford to ruin them.
When tuned one step colder iridiums will be going in for longevity.
I have newish platinums that i fouled by simply idling with a very rough A/F ratio. Didnt take long.