I have a question...I brought my car to my local shop. I know they tune cars all the time. Mustangs, Camaros, Vettes, whatever...I had them install a complete Borla system. Headers back. Also a FF kit from DMS. When it comes time to tuning, is there a specific way the car has to be tuned with the FF kit? I know on my STI we had to do a reference map on 93 and another with E85 and the ECU will adjust the timing and whatever. Does the Z operate the same way? They are using HP Tuners. I just off the phone with DMS and they said car has to be tuned on 93 tables, turn on input for FF sensor, tune on FF tables, and ignition tables/data doesnt have to be changed past 60-65% E content. Anyone have other input and any recommendations I can relay to the tuner? Thanks