The 85 GLHT I picked up this weekend has a flashable setup on it. I tried to connect with D-Cal but I'm having some problems and was hoping someone here can help.

I was told the car is currently running a "stock" s60 cal. I connected the serial interface to my laptop and brought up d-cal. I turned on the power interupt power, then selected connect in the flash menu (I've tried every combo of 16, 32, and com port), once prompted I turn the ignition to run and then click ok; but I always get an "ack" error about the ecu not communicating. What settings should I have for my com port? Anyone else had this issue and solved it? Thanks.