12-28-2020, 03:04 PM | #1 |
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RaceCapture Track Mk2
I am wondering if anyone is using the Autosport Labs RaceCapture data logging / telemetry products.
I was using TrackAddict on a android screen (5Hz GPS) connected to OBD with OBDLink SX usb cable, for minimum latency and it worked great. But as my skills grow so do my data logging needs and I turned my eye on RaceCapture Track Mk2. I especially needed G sensor data and oil pressure. Since the accelerometer / gyro is integrated in the RC this data is easy to get, but the oil pressure is not. The RC app has a CAN BUS preset for the N55 M2, but I did not work for me ( N20 engine ). I'm opening this thread to document my findings and maybe get some help from people that already have some CAN id-s and the formulas to get the relevant data from them. On OBDII the relevant channels available are:
What I would like to have ( for now ) is:
One thing that crossed my mind is that the BM3 already has access to those can id's, so they should be mapped somewhere, not sure how to get them though.
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Quaife LSD | BC Racing Coilovers | H&R ARB | F8x LCA+TS | Wiechers Strutbar | Mishimoto CAI | Mishimoto Oil Cooler | Mishimoto Oil Catch Can | Mishimoto FMIC | VRSF DP | Masata TIC | Masata CP | DV+ | Custom Kline Exhaust | GTS Style Roll Cage | Sparco Evo QRT | Brey-Krause seat mounts | Schroth Profi 2 ASM 6p | 10" Android HU| xHP Stage3 | BM3 | RaceCapture Data Logger | LithiumNext Battery
Last edited by ngl; 12-28-2020 at 03:05 PM.. Reason: added pictures |
12-28-2020, 04:18 PM | #2 |
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How is your Race Capture physically connected to the CAN bus?
I don't have experience with it specifically, but I've messed around with an AiM datalogger to sniff CAN data. My understanding is that the D-CAN bus (the one that's exposed on the OBDII plug) doesn't have all the custom BMW-specific PIDs (or at least it requires some special handshake I haven't figured out to get to them). You can get them if you connect directly to the PT-CAN -- in the cabin, it's easy to tap near the KOMBI or the FEM. I have the exact pins here. |
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12-28-2020, 04:25 PM | #3 | |
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*unfortunately, it's not editable, so I can't get get exact PIDs from it |
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12-28-2020, 06:13 PM | #4 | |
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I also found out that AiM now has 2 protocols for the Fxx platform, the F21 that has 13 channels, and the M235i one that has 21 channels. I was hoping to get the Pid's from their documentation, but no success there. I will email the dealer I got the RC from, as they are also an official AiM dealer, maybe I get lucky. Anyway, you should give the M235i protocol a try if you have an AiM and was using the F21 protocol.
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Quaife LSD | BC Racing Coilovers | H&R ARB | F8x LCA+TS | Wiechers Strutbar | Mishimoto CAI | Mishimoto Oil Cooler | Mishimoto Oil Catch Can | Mishimoto FMIC | VRSF DP | Masata TIC | Masata CP | DV+ | Custom Kline Exhaust | GTS Style Roll Cage | Sparco Evo QRT | Brey-Krause seat mounts | Schroth Profi 2 ASM 6p | 10" Android HU| xHP Stage3 | BM3 | RaceCapture Data Logger | LithiumNext Battery
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12-28-2020, 06:44 PM | #5 | |
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FWIW, the M235i protocol is for the M235iR, which runs a completely different ECU from our street cars. If you want to poke around and see what's available with the F21 protocol, here's a random example. Off the top of my head: throttle pedal position, throttle opening, brake PSI (front and rear), steering angle, the 4 individual wheelspeeds, RPM, ambient temp, charged air temp, oil temp, gear #, gearbox temp, torque (engine and gearbox). Last edited by msendit; 12-28-2020 at 06:46 PM.. Reason: grammar |
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12-29-2020, 11:53 AM | #6 |
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You are probably right about the M235i protocol, I can't test it since I don't have an AiM. I found some threads yesterday talking about it on F8x cars, so I tough it should work an all Fxx cars.
Considering your install is a hardwire, can you still use diagnostic tools or other OBDII devices with the AIM connected ? I'm also wondering, with a data logger hardwired, would this interfere with tools like xHP or BM3 ? And if it does, would powering down the data logger be enough to restore OBDII functionality ?
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Quaife LSD | BC Racing Coilovers | H&R ARB | F8x LCA+TS | Wiechers Strutbar | Mishimoto CAI | Mishimoto Oil Cooler | Mishimoto Oil Catch Can | Mishimoto FMIC | VRSF DP | Masata TIC | Masata CP | DV+ | Custom Kline Exhaust | GTS Style Roll Cage | Sparco Evo QRT | Brey-Krause seat mounts | Schroth Profi 2 ASM 6p | 10" Android HU| xHP Stage3 | BM3 | RaceCapture Data Logger | LithiumNext Battery
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12-30-2020, 12:19 AM | #7 | ||
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Quote:
Quote:
And yes, if there's some interference, turning down the logger will get rid of it. There's nothing that special about CAN, it's just a shared serial bus. On some other cars (new Miatas for example), the ECU just broadcasts various parameters on the bus all the time, so the datalogger really is just sitting silent on the bus reading the packets. For our cars, loggers have to specifically request the parameters, and the ECU answers. So there's some vague theoretical possibility to overrun the bus. I think there were some safeguards against that, but it's been a while since I've looked. |
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02-16-2021, 02:54 AM | #8 |
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My progress with the RaceCapture is still zero, because of winter temperatures keeping me from spending hours in the freezing car sniffing CAN messages, but I found there is a new protocol from AIM for the Fxx BMW's, called "BMW F series" protocol.
Figured I'd share this for AIM users that might not know about it, since the old F21 protocol was rather crap, barely had any info. The new protocol seems quite awesome, can even log turn signals . The only thing missing is oil pressure.
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Quaife LSD | BC Racing Coilovers | H&R ARB | F8x LCA+TS | Wiechers Strutbar | Mishimoto CAI | Mishimoto Oil Cooler | Mishimoto Oil Catch Can | Mishimoto FMIC | VRSF DP | Masata TIC | Masata CP | DV+ | Custom Kline Exhaust | GTS Style Roll Cage | Sparco Evo QRT | Brey-Krause seat mounts | Schroth Profi 2 ASM 6p | 10" Android HU| xHP Stage3 | BM3 | RaceCapture Data Logger | LithiumNext Battery
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04-12-2021, 11:28 AM | #9 |
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Weather finally warmed up so I got to install my RaceCapture data logger and telemetry.
I wanted to have it installed as close as possible to the center of the car so the accelerometer / gyro can get the best readings. It was not possible to put in in the absolute center ( where the BMW sensors are ) because a screw that holds the center console would've blocked my Can Bus wire, so I instead installed everything in the under the arm rest. This also allows me to have very easy access while debugging and sniffing can messages. Looking over the schematics on newTis I was able to find the closest PT-CAN bus wire are in the gear selector so this is what I used. I moved the 2 can wires to a new connector, added 2 new wires to the gear selector switch connector and made a new connector for both the gear selector and race capture ( please see pictures, it makes more sense ). Because the RC seems to send some messages over the can bus, ( I get some Lua debug errors ), it kept waking my car up when it went in standby if I powered it from terminal 30, so I moved it to terminal 15N ( ignition ON ). This allows my car to go to sleep again. Since I have an android navigation, naturally I can use the iDrive screen as the display, so everything looks very clean. No wires were harmed in the process, so everything is reversible.
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Quaife LSD | BC Racing Coilovers | H&R ARB | F8x LCA+TS | Wiechers Strutbar | Mishimoto CAI | Mishimoto Oil Cooler | Mishimoto Oil Catch Can | Mishimoto FMIC | VRSF DP | Masata TIC | Masata CP | DV+ | Custom Kline Exhaust | GTS Style Roll Cage | Sparco Evo QRT | Brey-Krause seat mounts | Schroth Profi 2 ASM 6p | 10" Android HU| xHP Stage3 | BM3 | RaceCapture Data Logger | LithiumNext Battery
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04-12-2021, 03:05 PM | #10 |
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