Make Chiptuning Your Own

Hello guys, I have a question! I would like to get some more hp out of my TTR 180 HP front. Now my question is it a big problem to get a tuning chip and then install it myself? Can a “bad” chip ruin my engine? My friend had a professional tuning carried out on his Fabia TDI and reported that they only built a finished chip and made a small diagnosis, ready! 700 euros all, is too much for me. I would also have someone who soldered me the chip no problem, just doesn’t want to buy shit.