Petrol forced induction engines usually benefit greatly from 'chipping'. Usually they up the boost to about where you are compressor limited, and injection, ignition and timing is adjusted to compensate. Usually they have narrower margins for fuel quality and such, and more agressive timing. Often with fuel octane restrictions as well, due to higher boost. My Passat went from a stock 150hp/230Nm to 211hp/355Nm by chipping (and a freeflow intake. Values were confirmed by dyno) alone. They upped the peak boost from the stock 0,55Bar to the compressorlimited 1,50Bar. The car ran like this for several years, and not a single problem due to chipping. As far as I know the car still runs fine.
Depending on engine of course, but usually engines are so restricted due to taxes and emissions.
Also, take a little care as to what program you choose for your car. There can be a large difference in driveability with different maps. I tried a program that had even higher peak power, but the powerband was very different. Probably cool for kids, cause it had tremendous 'turbokick', but not very driveable. The program I settled on was very nice to drive 'regularly', and awesome when pushed. My wife never even realized the car was chipped until I told her to push the pedal. Then she sat with a big grin and asked me "what did you DO to this car?!?"