how can i boast my power on my 206 gti please help!!!!

You can add a performance chip from superchips most likely, a KN cold air intake, and performance exhaust. Those are just some basics but start there and see how you like it

You can spray paint the horsepower on the doors. Then pull up next to little Opel Corsas and the Peugeot 107, or a Fiat Uno.and rev your engine.
As you squeel the tyres, boast out the window yelling, ''EAT MY DUST you creampuffs''.

l run one..give it a cone filter and a decat front pipe.that gives you an extra 15 bhp.another 10 bhp if you fit a full performance exhaust system..

Be very cautious about fitting an aftermarket air filter (as others are recommending). l have heard of many peugeot owners who have tried them have found them to be no better in airflow than the oem filters, while letting significantly more dust and grit into the engine (very bad) and being noisier!