D4D Chip Tuning !!!

Once again I have to turn to your concentrated knowledge mens !! DO NOT ENJOY !!! 😉 The following facts: Toyota Auris with D4D Diesel 177PS Year of manufacture 2007 at Toyota has had a known problem now in it !! My question to you. Does one of you have experience with Chip Tuning ?!?!??? Would you like to tickle more power out of the machine !! What do you say ? Is there something feasible ? If yes how much more lead ? How much more charge ? Consumption afterwards ?? Hope the You can continue to help me. Greetings to all of you 😉