I had a tuner in Miami I asked about doing my Porsche. I had built the motor from scratch. Did an EFI conversion, dual plugged the heads, bigger turbo, exhaust, custom manifolds and fuel rails, etc. I had set the car up.
Then hunted down some cat in Miami that had a tuner reputation. He told me some of the same things. Told me the tune was his, I had a real problem with that after doing the EFI conversion, custom manifold, CAMS, wastegates, Turbos, Intercoolers, you name it, my work. I had the car running well from data file analysis but wanted to fine tune with someone better than me on the Dyno. But he insisted the config file was his. Had to find another tuner. Never understood that nonsense. definitely something to get straightened out first.