Ok I'm new to the whole ls scene I have a 2001 5.3 out of a tahoe and a ecm out of a 99 camaro ......I can read through the obd2 port with ignition on but as soon as I crank the engine I lose all power to to my scanner through the obd2 port the engine will idle but as soon as I give it throttle it acts stupid any ideas here is a video of what it sounds like

http://vid1104.photobucket.com/album...ps05791b3c.mp4