Going to need to get an external antenna. It won't lock on underneath the windshield. Mounted to the side window half way down, all other windows down, and the pano roof open, I'm able to lock 7 or 8 satellites, but I don't want to leave it like that all the time. It's good enough to start playing with. I did a few 0-60 runs from 76 down to 74% SOC. They ranged from 3.47 to 3.52 without a 1 ft rollout. With the rollout, the standard way of publishing 0-60 times, that 3.47 is a 3.21. So pretty good for not fully charged. I still can't figure out how to generate the wheel hp channel. The instructions: Power, Torque and RPM Calculations - Racelogic don't match the actual software. The instructions say to used the "VBOX Tools" software but I can't find any such software. I only have the "Performance Box Tools" that came with it on the sdcard and match what's also available for download in the VBOX Sport section. MS is P85D with 19" wheels. 0-60 times will be slightly....ever so slightly slower than they should have been given all the windows were open so the drag was more.