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.
D3 Reservoir, Alky Control, FIICHILLER.
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 .