haha what you expect? To drive around below 2000rpm? This aint a V8. The engine was designed to rev out. Hell, the redline is 7700rpm afterall. If you are after more response, sell off the turbo and replace with a HKS2530. Comes on boost at 3800rpm~ and will give you max power of 210kw~ Else, live with it and rev out to 4000-5000rpm between shifts.
My r32 has an average fuel economy of 11.5Ltrs/100km~ Work out if yours is similar.
if you take the car on the track, you wont be seeing under 4000rpm anyways, so decide what the plan with the car is and start to change whatever you dont like.