Chip tuning!

Hello! I would like to use my Audi A4 1.9 TDI pump nozzle 130 HP chip tunen. The chip should not be too expensive and should not harm the engine at all. How much can the engine or gearbox withstand etc.? I have seen a chip (P-Box), which would bring 30hp and 50Nm more. Is that bad for the engine? Should you even leave your fingers off at all? But a little more thrust in the higher gears wouldn’t be bad! Does anyone know me a “good-natured” chip that doesn’t z u very badly recommend? Please for feedback! Thanks already in advance. With kind regards