I dont sell or install them, just happen to help Don fix problem since I am a FI guy and he is not. He was getting calls about his ignition system having issues with FI Tech. I spoke with the guys at FI Tech a few times but dont like their attitude. You shouldnt have to buy whole new ignition just to run this. Fi Tech is now installig one of Dons systems on a challanger they have there. My guess is they will be taking tech calls for them soon and should probably change their attitude about supporting their products if they wish continued success. Just my $.02