Hello i went for a top speed run yesterday and my car got to 90 and then just didnt seem to wanna go any faster and felt like it was holding back on boost , I have only recently brought the car and want to know if my engine is specced up correctly please see below ->

1.6 s2 mfi turbo ( all internals standard )
power engineering chip
mongoose exhaust
normad dump valve
everythink else is standard ,
i have never had this car rolling roaded either

Please can someone advise me on my next steps , can this be down to the actuator ????

Cheers Ads.