Race Tracking Your Supra - Information exchange

[AndyK5]

That I do not have personal experience with. I do know people run 18x11's with true coilover rear but as you know, people never give the full picture. The wheel will fit, the tires are the true story.

You still have the stock rear end link? I guess SPL adjustable one is not that necessary? I’ve got the front but was wondering if I needed the back.

Sponsored

 

[razorlab]

You still have the stock rear end link? I guess SPL adjustable one is not that necessary? I’ve got the front but was wondering if I needed the back.

Yup, still oem in the rear.

 

[FLtrackdays]

You links work now, those are for ST-40 calipers. Stoptech. Not OEM.

Thanks amigo. I realized after the fact that I picked Z4 30i instead of M40i. And I do think their link is possibly off for the Hawk email they sent. So I called them and you’re right. Still not available for the stock 3.0 premium calipers…. just yet. However, I did ask them another question.

Which was… I was told (just like Sean -Evo said), I can use any top hats with my Ohlins. I was short on time during the install and went back to my OEM top hats/mounts (easiest at the time). However they were making a spring noise with a decent amount of wheel turn. So the race shop said if I get mounts that allow the spring perch to rotate, they won’t make that noise and perform better. Bonus: the wife wanted the sound gone, which led me to the solution below

Update (solution): https://vorshlag-store.com/products/vorshlag-toyota-a90-supra-2020-up-camber-plates-coilover-perches

Also, I replaced the rear axels for leaky CV joint/boots. The owner of the race shop said she replaces the boot grease with high temp grease if a customer has a new Porsche that truly going dedicated track. So I don’t think it’ll hurt to do the same with my new ones. I only know of one other local buddy in Miami that had to do the same. His is dedicated track Supra, gets in more track time and drives during our summers 🫠 I realize the average Supra owner shouldn’t need this. But just something to think about if in more extreme conditions pushing her pretty hard.

 

[AndyK5]

Is there a way to have JB4 invade the OBD port but still have a laptimer like Vbox access information they would normally get from the OBD port like Throttle/Brake etc? I know JB4 reports temps and throttle but I am most interested in my brake application and release and I'd like to have that superimposed over my track videos perfectly synced. AFAIK JB4 can't share the OBD port with anything else...that those splitters don't work.

 

[razorlab]

Is there a way to have JB4 invade the OBD port but still have a laptimer like Vbox access information they would normally get from the OBD port like Throttle/Brake etc? I know JB4 reports temps and throttle but I am most interested in my brake application and release and I'd like to have that superimposed over my track videos perfectly synced. AFAIK JB4 can't share the OBD port with anything else...that those splitters don't work.

You need to tap into CAN or have an app that supports Enhanced OBD2 to log chassis stuff like brakes, wheel speeds, etc.

 

[AndyK5]

You need to tap into CAN or have an app that supports Enhanced OBD2 to log chassis stuff like brakes, wheel speeds, etc.

Like this? https://www.supramkv.com/threads/diy-hooking-up-aim-devices-mxm.14602/

I guess I did not know the difference between OBD and CAN bus. I mean I still don't but understand that JB4 takes OBD but data loggers can be positapped in to CAN bus and there is no contention between the two devices.

 

[razorlab]

Like this? https://www.supramkv.com/threads/diy-hooking-up-aim-devices-mxm.14602/

I guess I did not know the difference between OBD and CAN bus. I mean I still don't but understand that JB4 takes OBD but data loggers can be positapped in to CAN bus and there is no contention between the two devices.

Two different networks. Think of OBD2 as a request/answer conversation. So it takes time to ask the question and get an answer and if you talk over each other, you get confused. Think of CAN as a constant stream of data and you just choose which ones you want to see.

You CAN get both OBD2 and CAN data over the OBD2 port, but it will be slower and for the CAN stuff, you need an app that can read Enhanced OBD2 data.

 

[AndyK5]

Two different networks. Think of OBD2 as a request/answer conversation. So it takes time to ask the question and get an answer and if you talk over each other, you get confused. Think of CAN as a constant stream of data and you just choose which ones you want to see.

You CAN get both OBD2 and CAN data over the OBD2 port, but it will be slower and for the CAN stuff, you need an app that can read Enhanced OBD2 data.

So like something like this can be used to get CAN bus data to a data logger like vbox which has 32 Can bus inputs capability...there you select the telemetry you want and not mess with the OBD port at all?

https://www.vboxmotorsport.com/store/index.php?route=product/product&product_id=102

 

[razorlab]

So like something like this can be used to get CAN bus data to a data logger like vbox which has 32 Can bus inputs capability...there you select the telemetry you want and not mess with the OBD port at all?

https://www.vboxmotorsport.com/store/index.php?route=product/product&product_id=102

Looks like it. Keep in mind that the Vbox has very limited CAN data mapped out.

 

[AndyK5]

Looks like it. Keep in mind that the Vbox has very limited CAN data mapped out.

Can you spoon feed it to me (and others like me) plz? lol.

What app/hw to have gps data/video/selected
can bus stuff to be there without the use of OBD port. Complete solution. Currently have catalyst.

 

[Rocksandblues]

120 track days since new and rear diff is about done
Rear diff fluid changed twice a season. Stock struts. Driven very aggressively

Just a fwiw

 

[Traxion]

120 track days since new and rear diff is about done
Rear diff fluid changed twice a season. Stock struts. Driven very aggressively

Just a fwiw

This is the first car I've tracked. What kind of symptoms do you feel or how does the car start to change when you feel the diff starting to go?

Also can you link what you buy for trans and diff fluid?

 

[AndyK5]

Can you spoon feed it to me (and others like me) plz? lol.

What app/hw to have gps data/video/selected
can bus stuff to be there without the use of OBD port. Complete solution. Currently have catalyst.

@razorlab
Hold that thought, found this thread by you, let me read that first. https://www.supramkv.com/threads/datalogging-lap-times-and-vehicle-telemetry-all-in-one.15385/

 

[Rocksandblues]

This is the first car I've tracked. What kind of symptoms do you feel or how does the car start to change when you feel the diff starting to go?

Also can you link what you buy for trans and diff fluid?

Well…. The reports of my demise may be premature….

I know the diff is struggling. Fluid is shiny and the passenger axle can be wiggled.

BUT
Some other Supra guys said to top off fuel before time trial. Did not repeat and was able to smash my personal best.

Duh! Sorry. So when you drive like an animal you will fuel starve at Summit Main in 6-7 even at 3/4 full!!
Posted 1:18.2 in nasa TT2

 

[Maki2282]

What stabilizers do you recommend?

Sponsored