Mustang Performance Spark Plugs Boost level:10-20psi the Dual Port both vents-to-atmosphere

the Dual Port both vents-to-atmosphere and recirculates air (TS-0203-1071 DP version)

and to reduce stress on factory components (less warranty claims)

and drivability

Inlet & outlet V-Band flanges suit 40

Supports 1 to 6 Cylinder engines

Mustang Performance Spark Plugs Boost level:10-20psi the Dual Port both vents-to-atmosphereThis is the ultimate Performance spark plug whether your running a tune only or your making over 1000hp. When up tuning your car, one of the first things you are required to do is reduce the gap on your spark plugs, this is because the more power you make, the more cylinder pressure is created the harder it is for your coil and spark plug to ignite the fuel and air mixture in your cylinder to make power. By reducing the gap between the electrodes you