They could use it as an "out" for sure. Warranty will not be voided for that but they will not fix the issue at hand. Return to stock and bring it there.
2012 Audi Q7 TDI S Line ABTuning 391whp588wtq
01 Turbo Focus 300+ whp
2012 Focus 19" Niches, AEM CAI, F2 Race Header, 3" Borla Dual Exit, H&Rs, Eibach Sways 183whp157wtq