Ok, I might be completely wrong but I think this is a problem with my oil pump.

I have a Ka24DE and whenever I rev past ~3k RPM the oil temp gauge drops significantly. By the time I hit 5K RPM, it is at the bottom of the gauge. It is like I have no oil pressure past 3K RPM.

Is this an oil pump problem or something else?I am sick of staying around 2K RPM, its no fun...

Thanks in advance.