The Okada Projects' Plasma Direct is a direct coil replacement specially designed and developed with a high power amplifier built in, increasing spark amperage 100%. Plasma Direct Coils produce 4 times more spark energy than stock coils, creating a faster flame front and quicker light-off of the fuel mixture kernel to complete combustion. With Okada Projects Plasma Direct installed on your 03-06 Evo 8 & 9, you can feel increased torque in low RPM and get more horsepower in higher RPMs as well. The engine will also be smoother as a result of the increased efficiency. Installing Plasma Directs is an easy direct bolt-in to the engine, no splicing or cutting into stock wiring.