to be a POS. At VIR this weekend and finally got it to start when passing the start/finish line on the third session. Data points seem to be 2-3 seconds apart. Totally useless. This is on a brand new iPhone 15 Pro. I've used and followed this app since 2016. Someone at Porsche (or maybe a whole department) should get fired over this.

 

I agree it needs work. But as far as data point frequency (I assume you're taking about GPS location).. my understanding is that you can improve this by either connecting it to your car (this may only apply to certain models or certain later years), or by using an external GPS device. See this thread:

https://rennlist.com/forums/racing-a...l#post19047588

 

I saw you said iPhone, but a burner android will work great with https://www.petreldata.com/product/c...r-for-android/

It will pickup the same telemetry as the porsche app


Another option is https://racechrono.com/ which works well for either phone ecosystem

 

Thanks.
I tried a Dual precision GPS puck the first two sessions. The app confirmed it was using an external source, but the app never saw that I crossed the start-finish line. So I gave up on the Dual puck, and just went with the phone or the car - not sure which the app uses when the phone is connected to the car on wifi. The problem I am seeing, however, is not the 1Hz issue which I have always had, it is much worse - like only getting 10 data points during an entire 2-minute lap (just looked at it again this morning).

1Hz was useful to some extent, but what I saw yesterday is not useful at all with such a slow data rate.

The app still shows data that is several years old, and I can still see the laps and data at the 1 Hz rate.

Another probably unrelated issue, but may indicate lack of QA on their software, is when I go to

• settings > language it crashes the app.
• Preparation (bottom, right) the top menu pick is in German as are all the topics once you click into it. The other two topics have English titles, but all text 'inside' is German

I had this same issue on my old iPhone 11 and the prior app version.

I used Harry's laptimer for the last session with a Kiwi OBD2 dongle. Works pretty well, but I need to stabilize the phone - too much bouncing and it rotates and looks like an old Batman episode if anyone is old enough to remember that You can see in the video how the data lags - listen to sound of gear shifts and watch the throttle.

 

Does anyone know if Porsche develops this app in-house, or has an outside company do it? They really need a better QA team, or beta testers to report bugs, or something. There are a lot of bugs, some small/cosmetic, some things that just don't work, some that crash the app. I'm surprised Apple even approved this app, but I guess Apple doesn't have a way to really test & break it, without driving a Porsche around.

If anyone has a connection, tell Porsche I will beta test and report bugs for this app. It has so much potential, but right now it's far from Porsche standards.

Edit: I'm talking about the iPhone version here.

 

In the app they list 800-767-7243 and customersupport@porsche.com under contact us. I'm not sure where they develop it - I would guess they do not do it in house. I googled around a bit looking but did not find anything.

This app has been very close for a long time, but they keep fumbling the ball on the 10 yard line. In software, the last 10% of work takes about 50% of the total effort. Seems they stopped at 90% done.

 

I tried the new version for the app 4.2. The interface is pretty good and have the most important information.
Tried to connect external GPS DualGPS SkyPro which is listed as approved. it connects pretty easily ... just need to connect gps first and restart the app .... can see external as GPS source. The problem is that it doesnt record anything ... dont even show the map ... seems like is connected but GPS information not available. When use iPhone GPS can see the map and record free drive or laps (just around the block).
Want to test at the track with iPhone GPS to evaluate stability .... seems like people already reported issues .... but want to test anyway.
I also did other experiment ... use iPhone 7 w/o service and realized the GPS switched to vehicle ..... wonder if that would be more stable. Not sure how is the vehicle GPS accuracy.

 

4.2.0 is the version I was using on the iPhone.

 

I have also Solo DL 2 which is extremely reliable but like the interface and some data Track Precision app has.

I will try to compare iPhone 11 vs iPhone 7 ... wonder if would be any difference in reliability.

 

Has anyone been able to successfully add an external video (synchronize it) with your data after the fact? For example, I got pretty good video from my dashcam, and the Track Precision app only recorded data a few times (no video). When I try to add my external video, it just doesn't work. It shows me the "synchronize" screen, but then it just never adds it.

 

Just got a Garmin Catalyst delivered today.

 

The Catalyst is a great tool especially if you make use of Ross Bentley's "5-15-1" approach on track day. I use it alongside an AiM Solo2DLv2 and SmartyCam. When, not if, Garmin adds ECU inputs to the Catalyst V2 it will conquer a lot more of the market. For sure, some geniuses/coaches can make good use of the accelerometer graph in the current Catalyst but detailed brake and throttle are just too valuable for me to do without.

 

Larry, while some on the fence may choose to buy the Catalyst, should it add conventional OBDII CAN measures limited to TPS, RPM, ECT and a few others, unless they really up the processor and software analysis game in the Catalyst tablet, that information will be of limited value.

Honestly, it'll only add validation to when and how much you were on the throttle, or in the right gear, at a particular time. That's it. You won't get brake information unless the new version will allow configuration options for dozens of makes and thousands of models, because that info doesn't come through any generic OBDII profile.

Besides, you have the perfect tool to do some of the best throttle and brake analysis on your driving by using the AiM, which does have the ability to extract that info from your car and the analysis power to display it in terms that are even more valuable than the instant and over-the-lap measures of brake and throttle.

Matt and I have learned from very learned folks like Jorge Segers, John Block and Buddy Fey as well as superb engineers like Ray Phillips, Guangming Cui and Marc Manning, to be able to use math channels, formulas manipulating these raw measure into an objective value for a heretofore subjective measure.

Things like values for "Brake Aggression," "Throttle Aggression," "Steering Panic" and "Grip Factor" can all be calculated using your AiM hardware and software. Not so for the Catalyst, even if Garmin adds those inputs to their tablet.

Horses for courses. Let's not mistake adding features to enhance the marketability and sales of a device with a device which drivers who might really want to use those features to the fullest (and already exists and one that you're using) can already do.

 

The PTPA was great when it worked. Had tons of data you could export. I particularly liked that it told you when it detected over/under steer and invoked the nannies. Never got a good line out of it though, even using a Dual precision GPS puck. I expect to get a good line out of the Garmin.

 

Meh. The lines you get out of any cheap, basic UBLOX GPS engine is good for segment times, lap timing, speed and even, in some cases, comparison between laps and sessions, but I don’t trust any of them to define track position, relative to the edges of the track.

To do that, you need more. A LOT more. Like a ground reference station and a much more sophisticated antenna and GPS processing, along with an IMU.