sr71,
On the "plug", are you specifying the EGT probe plug into the ECU or the glowplug for starting the turbine? If the glowplug, ensure that the connector under the rubber boot is making good contact with the tip of the glowplug not the body of the plug. Also check the continuity of the glowplug itself, as it may be shorted. Finally, when you stated that the turbine fired up, did it complete ramping-allowing you full control of the RPM via the transmitter or data terminal? Let us know to further diagnose your problem.
Rgds,
Art ARRO