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      08-01-2011, 03:59 PM   #5
Z K's Avatar
Drives: E90 M3
Join Date: Jul 2011
Location: San Francisco

Posts: 2,038
iTrader: (3)

I have Harry's Laptimer. The timing is pretty accurate and the data is very good. The GPS attachment will make it more accurate as the iPhone GPS has a bit of lag in it. In the data logs you'll see the speeds are a bit slower than actual speed because of this lag.

For the price, it can't be beat. I do love the video feature too.

Here is me at Thunderhill a couple of months ago.
Z K is online now   United_States
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