I would be afraid to give such a done up tune away, not just because of the money I spent, but because every engine behaves differently.
Maybe your engine flows a tiny bit better, and that tiny bit is enough to move you from solid power AFRs to lean enough to melt a piston. Or your timing has less slop, and is too far advanced, and you damaging a piston.
That's why tunes given out with ECUs are always starting points on the SAFE (aka rich) side of the scale. You have to tune your own car for max power and reliability.