is that the original 1.3l doc engine from suziki that came out factory standard petro ?
i'd assume its running a stock " snail " turbo with 5psi ?
or have you done aftermarket turbo and injectors and modifications to bring it up to 7psi.
because i know these gti's for quick for a little 1.3l.
your engine can handle up to 7psi without any internal work anything after that i would suggest doing fordged internals to actually up the boost but i don't think the gear box in that thing would be lasting long.
nice little clean car you have by the way looks really nice

edit : i can see you have put an oil catch can as well i think that actually screws around with emission laws to you better becareful unless where you live there are no laws like that.
and you have mandrel bent stainless steel piping with cast iron intercooler piping so i think you must be running some kind of front mount.
you also have a blow off valve which is kind of clean as well.
i don't understand why you don't have a cold air induction for your pod , you should atleast shield your pod because you are losing power because of engine heat and you are sucking up hot air . What i suggest you should box it up or put some kind of alumiuim shield , i know modification places do sell them to go around pods and to actually run a pipe if you have room from the bottom to the pod to actually gain colder air because we all know that heat rises and the most coolest air is at the bottom.
just my 2 cents worth you could gain anywhere between 5kw to 9kw extra out of the car and it will be more responsive as suppossed to being sluggish in hot weather as well.