I have been doing some datalogging and email tuning. 2004 SVT Turbo. Everything was going great, then I went on a 230 mile road trip and when I went to datalog after the road trip LiveLink is no longer reading my AEM Air/Fuel Ratios but reads everything else. I tested my firewire with a multi-meter in a couple spots. The white wire that sends the signal is clean (has continuity), and the 12v red wire and black ground read 12v, so it's getting power. Does this mean there is a problem with the gauge or my tuner?