I did the same with my 2008 GT asking to add SIP data as of GT500 same gen (all don't have SIP switch) . Let's agree on something, does the GT500 EGR has anymore sensors (SIP) then any other normal Ford EGR? I looked on GT500 wiring and V6 (both has EGR) and can't find anything different and V6 has no switches too. All V6, V8 and GT500 2005-2014 with EGR and without has no SIP in the wiring and all are the same.