Predator is the best handheld programer i ever used on many cars with no issues
As Mike said they will sort it out for ya.
2012 ZL1 A6
Forged 376 CI, LSA HeartBeat, Mast Medium Bore Heads & JDP ZLR Cam, ARH LT , MagnaFlow Resonated X Pipe Muffler, SW Retro Chambered + BlackHeart AxelBack, ADM 102mm Snout, JLT intake, NW 102mm TB, ID850, AGP Dual Fuel Pump, MSD Wire's, Denso Plugs, Moroso CC.
RX SuperChiller, D3 Reservoir, Alky Control.
2015 Rear Fascia Conversion, Z/28 Spoiler & Diffuser , ACS Quarter Ports, ShowStopper's Side Marker's, LightWurkz Halo's.
Sosche With KenWood, SLP pod with PLX guage, DashLogic .