orderd some NGK-tr6's"2 heat range colder plugs" for my 96 cobra to go along with my NOS kit . "150hp shot #5171 nos kit" and I'm wondering if these plugs are safe for runing while not useing the nos for everyday driving?
Right now I got the NGK-tr55's "1 heat range colder" should I change my plugs back to the 55's while not running the nos or just keep the tr6's for all times?thanks
I have used NGK TR6's for about a year now. I ocassionally use the juice (6-7 bottles so far). I think they are great plugs, always look good when I check them and I really didn't notice any difference power wise N/A.