Hi guys

Got a issue with my CX7. Anything below 2500rpm there's almost no power, or it surges. Once it gets above 2500rpm it will drive perfect and pull on full boost.

I've recently done the timing, coils, plugs, injectors, high pressure pump, everything you can name, and it's still the same. Compression in cylinders is fine ( they are all within 178-185 ) I'm at a total loss what else to do. Every single sensor and every part I can think of is new, still the same issue.

Free beer for anyone who can tell me the issue and it's correct.

Fuel pressure readings at idle are between 450-550, on full throttle it's between 1650-1850psi. When it surges there doesn't seem to be any declines in fuel pressure either so I'm convinced it isn't fuel issue.

Edit: It's a 2008 2.3L turbo engine, and no engine lights/codes