How much more can be had?

[97stanger]

I somewhat got my new motor tuned. The reason I say somewhat is because I was having a computer/converter issue and we could only take the car up to 5800 rpms. At 5800 rpms I was seeing 16psi. My car seemed to be getting a little on the hot side, so just recently I relocated my tranny cooler from in front of my i/c and put it in my d/s fender to try to get more air to the i/c and I also installed a Reische 170 thermo instead of the 180 I had. I am going to wait until the end of summer, and bring the car back to my tuner so we can figure out this computer unlocking my converter issue and take the car higher in the rpms. The car has not even seen meth yet. I guess my question is, if say the car can be dyno'd to around 6400-6500, is there still a significant amount of hp/tq to be had from my last 5800rpm pull or are gains minimal past this point? Is it unrealistic to shoot for 540rwhp off the meth, and when adding meth 600rwhp? My curves seemed to still want to pull at 5800 pretty hard: