BlueML99

My car is about 96K now so I figure I should replace these spark plugs. I see most people have the NGK one step colder but has any one used the NGK laser or the new IV NGKs. How do they compare? Which should I purchase? I searched but wasn't able to get a comparison

uraberg

Stick with what you know is good. With the service interval on these plugs being the way it is, there really is no reason at all to switch to any other kind of plug.

Toadster

go one step colder if you've added pulley or other power adder, i believe it's one step of coldness per 75HP added

BlueML99

Thanks fellas