Photos from another Speedventures track day at Auto Club Speedway in Fontana, CA. I brought out the GoPro as usual, but this time I used Harry’s Lap Timer to record data. I skipped out on renting a transponder because there is no use when you use this app. For all you track people spending money on a transponder, check out this app.

One day’s cost of renting a transponder will get you this app. Check out the video below to see it in action.

BMW E46 M3 at Auto Club Speedway - Speedventures Track Day - BUILDJOURNAL

M3 Auto Club Speedway Track