turbo issue

Just got the car back from having the top end fully re build and a brand new turbo. The thing is when I got it back and after I drove it a couple hundred miles I went to do a pull and it’s making a lot of air like if the turbo is just blowing it out and the car isn’t making the full boost like...

Hey all. I recently picked up this bnr s4 unit online from a guy. Upon arrival, I noticed that there were scratches in the intake side around the intake turbine. At first, I freaked out thinking I got snowed. There was also a little side to side shaft play, nothing too serious but with nothing...

Hello, i just installed my bnr s3 and i'm running intro one issue. My stock turbo ran without any issues on 300hp. it barley makes 3-4 psi under 4000rpm. after that it goes as it should go from 2500rpm. Grimmspeed boost controller (stock map sensor atm, tunner said it's not important for now)...