dont shoot me guys , ive searched but came up empty. i currently have NGK B10EV on my FC motor 87 its ported and has a To4e turbo 720 injectors and since ngk has discontinued the b10ev i was wondering what plugs you guys use on your setups? i was recommended the B9ev but its a hotter plug? modded fc guys let me know what plugs you use .
i ALSO purchased the equivalent plug to the b10ev (too lazy to go to garage and get #)but when i installed them the car didnt want to start . took them off and installed the OLD b10ev and cranked right up .

 

You want ANY plug that stays cold under high load. I cannot remember if that is a hot or cold plug, yes, yes, that is pretty damn sad.

ANything with forced induction this is usually a good idea to help that little incy bitty bit prevention of pre-ignition. A plug that remains hot while under load could set off an incomming AF charge that has not gone to TDC yet.

 

ive always ran NGK Bur9eq....

 

I'm running BUR9EQ for all 4, and see other people doing that too.... but i have no idea if that is better than the normal 7EQ and 9EQ combo that mazda recommends (too lazy to search)

and since i see quite a few people doing this, i assume it is better to use 9EQ on all 4s ^_^

 

thanks guys for your replies. i got word from some motorcycle dealers and NGK that i can also use the other cold plug which is the B10EG just slightly different than the B10ev (electrode difference or something like that) but is cold temp which is exactly what i need for the amoount of load i run . gujys once again thank you