Hi all, i'm building a b16 with 350-400whp. But as I live in Brazil, i'm have some problems in get the "right" spark plugs as most of all.

I'd like to know if I can use the bkr7e-11 in my setup, or I should just get one step above(one step colder)?

Thanks!

 

I think you should go one step colder for every like 75-100 horsepower made? Dont qoute me on that but I think thats how it goes.