crav3s2k

Hello, well some of you know that i've been working on my custom turbo kit, and im almost done, but keep running into little problems. First of all I want to thank Socal, and Mugenrios2k for helping me! Well now to the problem..

This past Saturday, I went in for tuning, and couldn't not tune higher than 250whp, due to rpm issues. I am running Greddy Emanage Ultimate. At a certain RPM the rpm's would go haywire and jump around from 7368 to 3846, and etc. I was told that it could be the rpm wire wired to the emanage. I took a look last night and cut the rpm wire, and did some tests.

When I drove with the rpm wire cut, the logger showed the data like this...


After I reattached the wires then did another run and it ended up like this...



Its even crazier than before! Have any ideas?
My tuner said that he cannot tune my the car correctly, because of the rpms, they knock off the ignition and etc. And the rpms are supposed to be constant.
help!