Race Tracking Your Supra - Information exchange

[FLtrackdays]

Just expanding on this thought - it's not a "sudden slosh of fuel away from the pickup" that you'd get from an abrupt input, it's an "suspension all loaded up for a long time in a long high-g sweeper" situation most of the time.

Gotcha. Wishful thinking on my part then…

My car is at the dealer for this specific reason. It happened to me for the first time on a wet day where I wasn’t driving with the TC all the way off.

It’s gotten worse over time - now I can replicate it at will by punching it from 30-80mph and dismiss it at will by driving under 20mph for a few minutes.

EDIT: Although your error specifically calls out overheating - mine does not. I’d look at the Verus rear diff cooling plate and change your fluid again since it’s likely toast.

I get it from time to time as well. Really random. I just acknowledge it and go on. I’ve changed the diff fluid, have the Verus diff place & it still happens. Perhaps a BMW thang?

Any opinions for rear vent from SE? I cant run with no rear bumper so maybe this would be beneficial? Duno if i like the looks of it tho....
https://www.speedengineering.de/en/produkt/heckentlueftung-passend-fuer-toyota-supra/

If I could add up all the dollars spent on things that likely didn’t make much of a difference… yeah, I’d rather not ? ?

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[Rizen]

Barber has regular fuel pumps at the track, right? Several different octanes and takes a credit card to pump your own?

I love doing new tracks and I've only done Barber once a few years ago in a Miata. But I've raced on most of the tracks in the Midwest, from Road America to MidOhio and about 5 or 6 more. There is a little track northwest of Detroit called Waterford Hills. It's a fun little track. About 1.6 miles and more or less like MidOhio with less straights but a bit of elevation change. I started there back in 1980. A full race weekend back then was $35 and you got practice, qualifying and a race on Saturday, then qualifying, a race and a feature race on Sunday! I raced a bone stock Fiat X1/9 with just a roll bar, fire extinguisher and race harness in SSC (Showroom Stock C).

There’s a Buc-ees literally 3 minutes from Barber. Track should have fuel too but usually tracks mark up the fuel.

 

[Davo307]

Barber has regular fuel pumps at the track, right? Several different octanes and takes a credit card to pump your own?

I love doing new tracks and I've only done Barber once a few years ago in a Miata. But I've raced on most of the tracks in the Midwest, from Road America to MidOhio and about 5 or 6 more. There is a little track northwest of Detroit called Waterford Hills. It's a fun little track. About 1.6 miles and more or less like MidOhio with less straights but a bit of elevation change. I started there back in 1980. A full race weekend back then was $35 and you got practice, qualifying and a race on Saturday, then qualifying, a race and a feature race on Sunday! I raced a bone stock Fiat X1/9 with just a roll bar, fire extinguisher and race harness in SSC (Showroom Stock C).

Barber does have fuel on site. And somehow its actually cheap. Ive been there before and the 93 had been cheaper than some local gas stations. Also, rumor has it that gas there is ethanol free or at least much higher grade. They even sell 100 and 110 along with 93. The Bucees is nor even 2 miles from the track but getting our of the Barber complex itself takes like 10 minutes. Fuel pumps are on level 2 of the paddock across from the bathrooms. Barber is great, enjoy!

 

[tomfree]

There’s a Buc-ees literally 3 minutes from Barber.

^^^^This^^^^ No reason to buy in-track gas at Barber.

When we did Barber for OneLap a couple of years back, that was the first Buc-ee's I'd ever stopped at. If you've never done the Buc-ee's thing, you gotta go, just for the people watching if nothing else.

 

[Bug2th]

not sure if this makes a difference to most people but at Sonoma everything up to 100 is unleaded and the 105/110 are leaded. But for next time I’m buying a few 5g jugs and filling those up before getting to the track.

Barber does have fuel on site. And somehow its actually cheap. Ive been there before and the 93 had been cheaper than some local gas stations. Also, rumor has it that gas there is ethanol free or at least much higher grade. They even sell 100 and 110 along with 93. The Bucees is nor even 2 miles from the track but getting our of the Barber complex itself takes like 10 minutes. Fuel pumps are on level 2 of the paddock across from the bathrooms. Barber is great, enjoy!

 

[razorlab]

Has anyone had any issues with the Bootmod3 dashboard locking up/freezing? The app still works but the gauges stop updating data. I disabled Bluetooth and made sure all of the phone connectivity was disabled in the car but it still happened.

I am dealing with some heat issues and I am trying to use the data to manage IAT and oil temps so a bit frustrating.

Yea, the mobile app is trash. Got a bit better when I started using a hard connection via ENET but they still like to break the mobile app every other "update".

 

[Ron L]

Barber does have fuel on site. And somehow its actually cheap. Ive been there before and the 93 had been cheaper than some local gas stations. Also, rumor has it that gas there is ethanol free or at least much higher grade. They even sell 100 and 110 along with 93. The Bucees is nor even 2 miles from the track but getting our of the Barber complex itself takes like 10 minutes. Fuel pumps are on level 2 of the paddock across from the bathrooms. Barber is great, enjoy!

I did a track day there a few years ago at a Miata Reunion. I got five sessions of 20 minutes each and had a blast. That's why I'm willing to drive 12 hours to get there and do it in the heat of July! I love tracks with elevation change. That's why Road America and MidOhio are my other favorites. Someday soon I'd like to get to Road Atlanta and VIR.

 

[Rensuhlo]

One session at NCM. Spent the rest of the weekend making sure things ran smoothly for everyone.

I have in total 3 sight laps of seat time here. Stock brakes, didn't want to push it and just enjoy the experience with my passenger.
(Ev comp was too high for night shenanigans)

 

[Ron L]

It looks like there is a fair chance of rain or even some thunderstorms for my track day at Barber. I know they won't let us on track if there is lightning anywhere in the area and that's fine. But what about if it's just raining and the track is good and wet? Does NASA let tract day drivers out in the wet?

 

[Rensuhlo]

@Ron L as long as it's not a torrential downpour, you should be allowed to go out. Just be careful!

 

[Rocksandblues]

Yes, they will run in the rain. The lightning call is for the flaggers safety, not yours.

 

[Ron L]

@Ron L as long as it's not a torrential downpour, you should be allowed to go out. Just be careful!

I've raced in the rain before. One time, with my E Prod '87 MR2, I was on slicks! Now that was really fun... right up to the point were I was leading and slid just off track at MidOhio and got stuck because it was up hill in wet grass and I had zero traction!

 

[TBK]

Never been to the track in the rain, because, well, see location

 

[Rizen]

Learned this weekend that 22psi is definitely too much for the stock turbo especially in upper 80s ambient temps. I saw 243F coolant, 296F oil, and 148F IATs, even with the Verus oil cooler and a Wagner manifold.

After setting a boost max of 19 psi in BM3, temps dropped 10+ degrees on both coolant and oil and IATs stayed under 140, and the car was actually 1.5mph faster on the straight at Mid Ohio vs the higher boost map.

Picking up a spare hood in a couple of weeks to add louvers and hopefully that helps to bring temps down even further.

 

[i3igpete]

I ran a warmup session at gingerman and forgot to turn off my jb4 (+5 psi additive). 65-ish ambient, I have the 30x9 racelouver vents but stock HXs and IM. Here's the log (-1159.csv) with 2 other map0 sessions for comparison purposes.

https://datazap.me/u/i3igpete/nasa-gingerman-2025?log=1&data=1-3-15-30-31-32-36

Screenshot towards end of session:

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