The air injection system is designed to mix air with the exhaust to burn unspent fuel.
This causes superheated exhaust turning the head pipes blue. Removing the AI system will decrease / eliminate the “bluing” effect.
Complete air injection removal kit includes aluminum bolts with the Union Jack milled into the top two copper washers, vacuum port caps and airbox plug.
Three additional vacuum caps are now included in each kit to assist the conversion of Efi Models. (Other mods may be needed on Efi models in addition to this kit)