Nissan 370Z Forum - View Single Post

wstar · 09-09-2011, 08:44 PM

New Video. I'll re-paste the summary info from Youtube below, for embedded watchers:

MSR Houston Clockwise again in my 370Z at the Red Meet and Race Fuel event on Sep 8th. This is my second time on the track, so obviously my driving isn't great .

Experimenting with a new cheapo setup for telemetry, etc ahead of my upcoming The Driver's Edge class: "aLapRecorder HD" recorded the video, OBDII data, and GPS data on my dash-mounted Android phone (T-mobile G2X running Cyanogen firmware). OBDII hardware was a PLX Kiwi bluetooth, and GPS hardware was a Qstarz QT-818XT in 5Hz DGPS mode. Post-processing was done with RaceRender 2 Deluxe.

The phone's accelerometers (combined with the unstable window mount) seem to provide fairly useless G-force data, but the rest of the data came out pretty decent. Data to video sync is very slightly off, but not enough that I'm going to go back and re-encode this whole video. Audio is noisy as always from a dash-mounted cellphone with the windows open.

Also the "Throttle" display isn't logging pedal position. It's logging some parameter related to the ECU-controlled throttle butterflies, not my pedal position. I'm hoping it may prove comparatively enlightening down the road if I play with the throttle mappings more in UpRev before the next run.

Got what I think is fuel starvation, this time at 2/3 tank, twice this session at the same spot on the track (Laps 4 + 6) where it happened last time (beginning of the long back straight, coming out of a long fast right corner).

Lap 5 was the fastest one, a pretty decent run for me overall.

09-09-2011, 08:44 PM	#404 (permalink)
wstar A True Z Fanatic Join Date: Mar 2009 Location: Houston, TX Posts: 4,024 Drives: too slow Rep Power: 3594	New Video. I'll re-paste the summary info from Youtube below, for embedded watchers: MSR Houston Clockwise again in my 370Z at the Red Meet and Race Fuel event on Sep 8th. This is my second time on the track, so obviously my driving isn't great . Experimenting with a new cheapo setup for telemetry, etc ahead of my upcoming The Driver's Edge class: "aLapRecorder HD" recorded the video, OBDII data, and GPS data on my dash-mounted Android phone (T-mobile G2X running Cyanogen firmware). OBDII hardware was a PLX Kiwi bluetooth, and GPS hardware was a Qstarz QT-818XT in 5Hz DGPS mode. Post-processing was done with RaceRender 2 Deluxe. The phone's accelerometers (combined with the unstable window mount) seem to provide fairly useless G-force data, but the rest of the data came out pretty decent. Data to video sync is very slightly off, but not enough that I'm going to go back and re-encode this whole video. Audio is noisy as always from a dash-mounted cellphone with the windows open. Also the "Throttle" display isn't logging pedal position. It's logging some parameter related to the ECU-controlled throttle butterflies, not my pedal position. I'm hoping it may prove comparatively enlightening down the road if I play with the throttle mappings more in UpRev before the next run. Got what I think is fuel starvation, this time at 2/3 tank, twice this session at the same spot on the track (Laps 4 + 6) where it happened last time (beginning of the long back straight, coming out of a long fast right corner). Lap 5 was the fastest one, a pretty decent run for me overall. __________________ 7AT Track Car! Journal thread / Car setup details