I'm having problems communicating with this ecu. It allows me to read it one time then any subsequent attempts result in a no comm message. I'm using a V2 that's up to date and I have not had this problem with any other operating system that I have used. I have checked the car harness and connections carefully and even have the problem using my bench harness. It seems like if I let it sit overnight then it will communicate one time. This may just be coincidental. Any ideas?? The car runs fine and I can view live data through the V2 when it is running.