No worries, mine was from horsepower in a box, rated at 300rwkw
I made 210rwkw on the stock series 2 turbo then upgraded
nismo 555cc injectors, z32 afm, gt3076r with avo rear housing, bosch 044,and only made 250rwkw...
Felt like i was the ginnie pig testing this turbo....
Now i wouldnt touch any GCG or AVO or hi flow for that matter
Only genuine Garrett or Hks