2" SUPERCHIPS FIREFLY LAZER BOOST & EGT GAUGE #49001 Superchips Lazer EGT, Power Level and Boost Gauge, 2 1/16" PN 49001 This Boost/EGT gauge was designed to plug into the PN 3601 Superchips Firefly device or other inline controllers. It will not work without having an external controller and does not come with any sensors What you see in the pictures is the exact item you will receive  no additional items are included. Additional parts are required to install this item-they will need to be purchased separately