Figured out my problem.
Make sure your DCE/DTE settings are correct. Basically, my VEMS ECU and Serial bluetooth adapter were trying to Transmit on the same pin and Receive on the same pin. So I couldn't communicate with it. I guess my USB serial adapter doesn't have that problem (its the opposite type of device), which is why I could talk to my tablet with my computer using that blue tooth adapter.
There was a switch on the side of my adapter for this, so I don't need to use a crossover cable. This is really nice because I can now hide the adapter in the same place I used to tuck my USB cable. Makes it easy to switch back and forth.
It will be great when we can get datalogging and even the ability to change settings this way. I am using a tablet (Asus TF700), not a phone, so moddifying settings/tables seems more than practical. I mean, the thing has a keyboard dock, so I could use it the same way I use my laptop now. Its just small and has MUCH better battery life AND can be charged off a basic 12v-USB car charger. Hopefully that will happen at some point... With Windows 8 tablets coming there may not be much motivation to support Android over Windows 8 and Windows RT. Maybe Android will get WINE with WindowsRT (both run on ARM). Still would require the devs to compile VEMSTune for RT.
Jim