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      01-14-2022, 03:25 PM   #1
gec929
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Unhappy Using JB4 on Racetracks

Hey all,

Before installing a JB4 on my M3 comp, I was using the TrackAddict app to capture videos with car data. That way, I was able to create videos with track map and car data overlays. TrackAddict uses a OBD connector to read the car data in real-time during my sessions.

The problem with JB4 is that it requires to be connected to the OBD port at all time in order to work properly and give the best results. So.... now I have a dilemma: If I use JB4 as intended, I cannot have videos with car data and track map overlays. If I disconnect the JB4 from the OBD port, it'll performance poorly and be stuck on map 1, I believe.

Anyone ran into this and can provide some advise?

Cheers!
gec
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      01-17-2022, 04:56 AM   #2
horsepower_and_hounds
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Quote:
Originally Posted by gec929 View Post
Hey all,

Before installing a JB4 on my M3 comp, I was using the TrackAddict app to capture videos with car data. That way, I was able to create videos with track map and car data overlays. TrackAddict uses a OBD connector to read the car data in real-time during my sessions.

The problem with JB4 is that it requires to be connected to the OBD port at all time in order to work properly and give the best results. So.... now I have a dilemma: If I use JB4 as intended, I cannot have videos with car data and track map overlays. If I disconnect the JB4 from the OBD port, it'll performance poorly and be stuck on map 1, I believe.

Anyone ran into this and can provide some advise?

Cheers!
gec
I am pretty sure they make a OBD pass thru that you can plug in multiple devices..... do some research
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      01-18-2022, 02:24 AM   #3
robbo mcs
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You can buy obd splitter cables. I used one in my race car (not my M4, BMW mini). I ran one feed to dash display and one to data logger/diagnostics. Both worked correctly
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      02-19-2022, 10:29 AM   #4
gec929
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Update on this challenge:

I purchased this OBD splitter (Amazon: https://smile.amazon.com/gp/product/...?ie=UTF8&psc=1)

Make sure JB4 is connected first and on extension #1.

Everything works well! Both JB4 Mobile and TrackAddict apps are working well, and you can switch JB4 maps and then record sessions using TrackAddict!

Only caveat is that once you set the map you want, avoid switching back and forth between apps as that will kill your session in TrackAddict.

Cheers!
gec

PS - JB4 map 3 and 5 (with the right mixture of E85) are making the xDrive M3 an absolute beast, which is amazing to say about a car that is already a freaking monster. Map 5 results with much more boost, and maybe slightly less smooth comparing to map 3. Both maps are pure joy! Just match the right map to your circumstances and driving style.

Last edited by gec929; 02-19-2022 at 10:37 AM..
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