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timurrrr · 07-31-2022, 09:44 PM

Spent the last couple of evenings before the first track day setting up data logging. Made a harness reusing the ASC connector, so no more ASC annoyance.

Documented my findings on GitHub:
https://github.com/timurrrr/RaceChro...b/ft86_gen2.md (wiring and CAN data mapping)
https://github.com/timurrrr/RaceChronoDiyBleDevice (DIY device to acquire the data and send to RaceChrono)

I then spent some time in the paddock right before my first track session making some last-minute sanity checking for the data logging with ignition on but engine off. When it was time to start the engine and go to the track, it went full DeLorean from Back to the Future: threw all the lights on the dash and just died... Turns out I discharged my old Braille battery!

I didn't have a battery tender with me, but luckily a few of my paddock neighbors came to rescue and helped me push-start the car. A bunch of people later asked me how come a brand new car needed pushing...

I missed the first session, but at least the car was back running.

All dash lights quickly went away, except for the check engine light.
I learned that if you press the "back" button on the steering wheel to dismiss the "Check Engine" warning, it will show up again in a couple of seconds with a chime.
However, if you enable Track mode, the warning will stop bothering you...
Which I guess also means that if a real issue happens in Track mode it will NOT warn you other than lighting up a light? Strange design.
The CEL and the warning both went away after a couple of track sessions.

Impressions about the car:

Clearly a couple of seconds faster than gen1.
The stock exhaust is so quiet that without ASC I couldn't really hear the engine with the windows down and helmet on. My first attempt at a fast lap I under-revved during a heel-toe downshift to 2nd and went pretty sideways into T7.
I had to set up the "yellow zone" to start at 7000 rpm to get enough of a visual alert that it's time to upshift. Yes, I didn't really hear the engine even approaching the red line.
Same power-on oversteer issue that I've experienced at autox. I had some doriftos going towards the concrete wall on the outside of T11, those were a bit nerve-wrecking.
I recorded 261ºF oil temperatures during one of the sessions (OEM oil temperature sensor) but other sessions the peaks were 250–255ºF, with the oil temperatures fluctuating between 240ºF and 250ºF throughout the lap. It was ~70ºF ambient, a mix of sunny and overcast, and windy at times.

Here are some photos:

and an onboard of my fastest lap of the day:

As it was more of a shakedown day, I didn't push too hard, and my optimal lap was over a second faster than my fastest lap of the day.
But that was enough to score a P2 in my class, and P1 was out of reach (big wang!), so I didn't really need to go any faster anyways.

07-31-2022, 09:44 PM	#35
timurrrr Senior Member Join Date: May 2019 Drives: 2022 GR86 Location: Between Sonoma and Laguna Seca Posts: 1,726 Thanks: 2,145 Thanked 1,323 Times in 727 Posts Mentioned: 31 Post(s) Tagged: 1 Thread(s)	Spent the last couple of evenings before the first track day setting up data logging. Made a harness reusing the ASC connector, so no more ASC annoyance. Documented my findings on GitHub: https://github.com/timurrrr/RaceChro...b/ft86_gen2.md (wiring and CAN data mapping) https://github.com/timurrrr/RaceChronoDiyBleDevice (DIY device to acquire the data and send to RaceChrono) I then spent some time in the paddock right before my first track session making some last-minute sanity checking for the data logging with ignition on but engine off. When it was time to start the engine and go to the track, it went full DeLorean from Back to the Future: threw all the lights on the dash and just died... Turns out I discharged my old Braille battery! I didn't have a battery tender with me, but luckily a few of my paddock neighbors came to rescue and helped me push-start the car. A bunch of people later asked me how come a brand new car needed pushing... I missed the first session, but at least the car was back running. All dash lights quickly went away, except for the check engine light. I learned that if you press the "back" button on the steering wheel to dismiss the "Check Engine" warning, it will show up again in a couple of seconds with a chime. However, if you enable Track mode, the warning will stop bothering you... Which I guess also means that if a real issue happens in Track mode it will NOT warn you other than lighting up a light? Strange design. The CEL and the warning both went away after a couple of track sessions. Impressions about the car: Clearly a couple of seconds faster than gen1. The stock exhaust is so quiet that without ASC I couldn't really hear the engine with the windows down and helmet on. My first attempt at a fast lap I under-revved during a heel-toe downshift to 2nd and went pretty sideways into T7. I had to set up the "yellow zone" to start at 7000 rpm to get enough of a visual alert that it's time to upshift. Yes, I didn't really hear the engine even approaching the red line. Same power-on oversteer issue that I've experienced at autox. I had some doriftos going towards the concrete wall on the outside of T11, those were a bit nerve-wrecking. I recorded 261ºF oil temperatures during one of the sessions (OEM oil temperature sensor) but other sessions the peaks were 250–255ºF, with the oil temperatures fluctuating between 240ºF and 250ºF throughout the lap. It was ~70ºF ambient, a mix of sunny and overcast, and windy at times. Here are some photos: and an onboard of my fastest lap of the day: As it was more of a shakedown day, I didn't push too hard, and my optimal lap was over a second faster than my fastest lap of the day. But that was enough to score a P2 in my class, and P1 was out of reach (big wang!), so I didn't really need to go any faster anyways. __________________ Follow the build thread for my GR86! Last edited by timurrrr; 08-06-2022 at 03:03 AM.