Still ain’t fixed

[Backyard]

Hey it’s Backyard, I’m still working on 2007 Honda CRV . I can’t seem to fix this vehicle, At 4000rpms it goes into limp mode . I have replaced spool valve 3 times , third time with a Honda part . Both timing chain and plugs replaced , mass air flow and egr cleaned , Fresh oil change again with filter , 02 sensors . Keep in mind the cat is gutted ( not by me ). Broke down and took it to Honda dealership and they would not fix unless I replaced the Cat and  the 02 sensors. I had bought aftermarket sensors they did not like . They charged me 215.00 and I’m still back at the beginning. I have seen so many people have the same problem with this 2.4 but mine still broke . West Virginia mountains require your small engines to rev above 4000rpm when merging.If someone could assist I would greatly appreciate it .