They can do that, I will be sending him a copy of my fault codes and he will be sending back the tune with the o2 monitoring removed. Also I'll be getting the stock version of the tune file for e-test purposes.
Check out my band - The Marked
1999 BMW 328i (Daily Driver) - m54b30 intake manifold, ebay headers, Rebirth Motorsports CAI, Rogue Engineering underive pulleys, Epic Motorsports Software, Custom 3 inch exhaust with Burns Merge, Schrick 264/248 Cams
1967 Buick Skylark - 430 Buick Big Block Swap.