Ok so I've done 200 miles and the car has no problems revving up to and past 4k rpm

However, the car doesn't seem as powerful as it used to be? Like before it used to force me back into the seat until it hit 3k rpm at which point it stopped, but after I cleaned the turbo it doesn't seem to really force me into the seat anymore? It is still quicker though, since I can now use all the rev range.

Any ideas?