no boost

Hey guys hope everyones mazdaspeeds are not breaking ever week like mine is. anyway I've found that my speed has lost a lot of power. normally around 3000-3500 rpm the car pulls really well and honestly is amazing. i found about 3 days ago the car doesnt hit any sort of power anymore around that...

Okay where do i begin? I have been home for a total of 3 days in the last 5 months, i have spent all this time between North Carolina and Tennessee . I have been running between my fathers and my mothers house since they are 70 plus, and i have had no time to be home, let alone work on my car...