What is the best spark plugs to get for our cars, and well help boost performance?

 

Bur9eqp all around if you are modded.

 

If your running 12-14psi of boost RX7 Rage is on target.

If your running under 12psi of boost stick with stock configuration

If your running over 14psi of boost you might want to consider NGK B10EGV plugs. I'm liking them alot right now

Good luck,
STEPHEN

 

HKS Iridium...! Very pricey...! but they work quite good.

Jc.

 

best performing plug is the one that is not built up with carbon, basically the hottest one you can go without preignition. General consensus is what SPOautos said.

 

also depends on the weather condition i guess... under 12psi i think stock configuration is the best.

 

Splitfires baby!!!!