So has anyone used the predictive lap functionality on Harry's yet? That's honestly all I care about. I need it for an event coming up in just over a week and I won't have a chance to test it at speed until I get to the track. Any suggestions? I have an iPhone4 (non-S) and plan to use the standard GPS unless I hear otherwise.
Any help would be greatly appreciated!
2003 SGM SMG - Sold but not forgotten!
2010 JzB DCT - Lovin' it