Quote:
Originally Posted by Merlinshawn
Do you have the Kiwi 1 or 2?
I have been playing around with some of the track apps and I have the OBDII PLX Kiwi 2 Wifi. I like Harrys Lap Timer, except that it relies on the GPS refresh rate to recorded data.
I have an iPhone 4s and the internal GPS refreshes its self once a second or 1 Hz, my OBDII Kiwi 2 refreshes 6 times a second or 6 Hz. Since Harrys Lap Timer is heavily GPS based its only recording data once a second and dropping a lot from the OBDII. It even drops a lot of the accelerometer data, it refreshes at 31 Hz.
The only way to get Harrys to record data quicker is to get an external Bluetooth GPS with a higher refresh rate and then it will look better because its not skipping all the info in between those seconds.
I have been the apps for autocross, a lot can happen in one second. I have been using DashCommand on my phone, it is more expensive. It records based off the OBDII refresh rate, but does not have the lap features Harrys has. I haven't tried the Rev app just because I saw it hasn't been updated in a long time.
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I have the Kiwi Plex 2 Wifi but the refresh rate is kind of slow. I recently bought a bluetooth external Dual XGPS 150 too, but it doesn't fix the issue. It seems like during the real time recording, I can see the throttle blip after changing the sensor delay for kiwi Plex obd to "0 sec" the rpm gauge relatively pairs up with what I'm doing too. But that's real time when I'm driving when recording.
But I don't believe when it's time to overlay its using as much data points to overlay onto the video. Because I cannot see the throttle blip in the overplayed video. Which only makes me feel like the rpm isn't too accurate. Has anyone been able to successfully see a throttle blip or get Harry's lap timer to capture and pair up anything in fast response in there video?