ok so i just got a dynotune kit with alot of goodies, my question is what is the stock heat range for the hr? i need one step colder plugs and i went to autozone and he sold me autolite app 5325's. he said they are a step colder but im all confused because they are a domestic company and they go the higher the number the colder the plug? idk someone help me out lol

 

sorry man he sold you the stock plug, 5325's are stock if you want less heat than you go down in numbers 5324. also go get some NGK plugs Autolight are junk. Iridium are nice 100k plugs

 

ok i will be returning them then, the stock hr heat range is 8 right?

 

ngk step colder than stock. theres a model guide i remember seeing on here so u can match correct numbers.