blue_xr6 Member 40 Member For: 16y 1m 6d Posted 20/07/09 08:29 AM Share Posted 20/07/09 08:29 AM Does anyone here use the g-tac software on I-phone to measure the speed, quarter mile, 0-100 etc. ? I've heard they're pretty good and come free from app store. I've just download mine but don't how to use it. When I touch on the "g-tac" logo, a car image appears for 1s then gone. Does anyone here know how to use it? Link to comment Share on other sites More sharing options...
seventytwo Still have a turbo, it's just on a diesel. Lifetime Members 5,368 Member For: 19y 4m 1d Gender: Male Location: The 8th Dimension Posted 20/07/09 08:40 AM Share Posted 20/07/09 08:40 AM They are fairly accurate but it depends on the number of satellites you can lock onto, the best way is still the track Link to comment Share on other sites More sharing options...
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