The have been many changes to the fuel system of the TSi since the kit was delivered. 1) There used to be 2 inline fuel filters that have been replaced by a single large filter on the fire wall (I think that's good) 2) After the fuel selector valve the is now a single extra boost pump that feeds the the ROTAX pumps and is used mainly for takeoff and high altitudes when using Mogas. 3) the addition of a Fire Wall mounted fuel filter 4) the Addition of a gascolator. 5) The routing of the fuel lines through the firewall is different. The addition to the center channel of the boost pump interferes with foot warmer because of the needed bypass check valve. So a slight reroute from the pump to the firewall had to be planned out. I have to plan differently as the firewall is getting crowded and the running of the fuel lines (with fire covering) has become a Gordian knot of a problem. This is also the general area of the inter-cooler. I may relocate the galscolator as well add AN6 90 degree fuel fittings in different spots to accommodate the fuel lines. I was having trouble reconciling the fittings with how the instructions are depicted so I sent an email to TAF. The factory sent a photo of the new way the fuel lines go through the fire wall and the now use fittings that attach to the firewall vs. the old way of running the hoses through rubber grommets. Instead of drilling new holes in the firewall I have decided to use the existing holes with different grommets. I am happy with the result, a firm attachment point and grommet protection.