sr20det problem - no power from 3-5k rpm

[dasalnt]

I've recently started having a problem with my redtop sr20det. When it first started, the car would drive fine until around 3k rpm and then it would feel like it wasn't gaining anymore power but my boost would continue to go up to 7lbs. I just changed out my spark plugs today and it helped a little bit. Instead of not feeling a power increase after 3k rpm, i dont feel any power increase after 3k rpm but once it reaches around 5k rpm i can feel the power come on again. Hopefully someone has experienced a problem like this before. If anyone lives in the la/oc area and is willing to help diagnose/fix the problem i would also be willing to pay, thanks!