Quote Originally Posted by stew86MCSS396 View Post
I thought I posted detailed sure fire way of getting it to talk, try post #5: http://www.gearhead-efi.com/Fuel-Inj...utoprom-issues
If you leave apu1 USB unplugged, open up device manager, observe device manager while plugging in apu1, you'll see new USB device appear and you can check what com port it is using. From there you follow above link to make sure tprt is using correct com port.
Ill check out that link