HKS GCC

The GCC is an additional electronic tuning component designed to add flexibility to the VPC and PFC F-CON. The GCC simply plugs into either the VPC or PFC harness and allows the user to adjust the fuel pulse duration at specific rpm intervals and/or boost levels. At each of the five intervals, the GCC can richen or lean-out the programmed fuel curve. The GCC will interpolate or average between points of adjustment to ensure a smooth fuel delivery. USE OF THIS PRODUCT REQUIRES EITHER A VPC OR PFC F-CON UNIT (Sold Separately.)