There are some interesting features to the datalogging software. Hitting Stop then Start doesn't clear the buffer, just appends logging. Look for discontinuities in the datalog files. Once we have the delta-T between the two clocks (approximately PST to GMT) we should be able to match up readings. dt030304-1.txt start dt030304-2.txt modified BCF needle, 5inHg vac start dt030304-3a.txt modified BCF needle, Full Throttle start dt030304-3b.txt modified BCF needle, Full Throttle start dt030304-3.txt modified BCF needle, Full Throttle start dt030304-4.txt modified BCF needle, Full Throttle start 11:49:46 07:35:31 dt030304-5.txt Modified BBA needle, start 5invac end Full throttle start 11:59:53 dt030304-6.txt Stock BBA needle, start 5invac end full throttle start 12:14:58 dt030304-7.txt Modified BBA needle, race gas start 01:00:23 09:00:07 dt030304-8.txt Modified BBA needle, race gas 8 degrees BTDC start 01:09:57 09:09:40 dt030304-9.txt Modified BBA needle, race gas 14 degrees BTDC start 01:27:57 09:27:40 rd020218-1.txt log of driving on the road Feb 18 rd020218-2.txt log of driving on the road Feb 18