Originally Posted by toner123

I dont think your understanding what I said earlier. Not trying to be a *** when I said that, just want you to have all the knowledge so please understand that. There is no one step colder plugs for our car. The stock plugs in your car are the same ones the GTR use. The heat range on the stock plugs is heat range 8. There is no colder plug then that on the market currently. Just don't want you to go buy heat range 8 plugs thinking your getting colder ones when in fact your putting the same ones in your car that you have currently and end up wasting money. Like I said earlier your spark plugs are not the problem. Like Jordo said you would have a CEL if it was.