rfreeman27

the 9's are a colder plug. If your engine runs hot (like a turbo) engine, the plug will be able to remove / handle the heat better. You will run at higher temps with the 7's because they simpally cannot extract / handle the heat the 9's will.



hope that helps

FrestyleFC3S

just run 9s all around....its easier, slightly better, and you wont ever mix them up

Nemesis

has anyone run the racing 9's?

MazdaEnthused

now what advantage would racing 9s be to me with a stock 7

FrestyleFC3S

nah i just run ngk 9's



well you have a T2 right?....if so read the thread man....freeman expalined it a whole lot and theres a ******* link...use ur brain this isnt the first time u asked a question about the obvious things that are right in front of you



- mike

MazdaEnthused

i did read the thread i was following along what you guyz wer saying i never saw the link untill now