When adding forced induction to your Civic it is necessary to bypass the factory MAP sensor in order to avoid limp mode or check engine lights. The Blox MAP bypass valve completely blocks boost from reaching the MAP sensor and simulates ad wide open throttle condition to the ECU. This will protect the factory map sensor from being damaged and prevent ECU malfunction. The Blox MAP bypass valve for the 96-00 Civic is fully CNC machined in light weight aluminum and is available in five attractive anodized colors. For added convenience, Blox includes all necessary hardware for a trouble free installation.