Race Tracking Your Supra - Information exchange

decodeddiesel

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I really dug it when I saw it at Lime Rock the other week. Although somehow the thought of your car returning to stock makes me lol.
 

BrettG782

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Just got Eibach Sway bars installed. Im going to keep Front Bar Middle setting and rear on the softest setting to start off with. What are your settings for adjustable sways bars????
I run the exact same. Felt much better on the big turns like turn 2 at Barber & 9 at NSS. Front I could go with Full stiff or Middle. Rear's I haven't liked anything but softest so far especially if it's any high speed track. I also have the Eibach springs too.
 

94boosted

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I tie down using wheel straps. Why are you wanting to immobilize the car's suspension?
Why have it working over bumps for thousands of miles if it doesn’t have too?

And I take it you cross your straps? If so, aren’t you putting a bunch of lateral load on your suspension? Do you use any specific straps to avoid scratching the wheels?
 

Rocksandblues

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Why have it working over bumps for thousands of miles if it doesn’t have too?



And I take it you cross your straps? If so, aren’t you putting a bunch of lateral load on your suspension? Do you use any specific straps to avoid scratching the wheels?

Do not cross straps. Actually a big no no


Cloth straps go through wheels. They don’t mark
 

kaj

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Why have it working over bumps for thousands of miles if it doesn’t have too?
That's like asking "Why have your suspension compressed for thousands of miles if it doesn't have to?". Or "Why pull on the frame for thousands of miles if it doesn't have to", etc. Straps have to pull on something, doesn't really matter which way you go.
 
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kyle9

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Just got Eibach Sway bars installed. Im going to keep Front Bar Middle setting and rear on the softest setting to start off with. What are your settings for adjustable sways bars????
As soft as you can tolerate will maximize mechanical grip.

I usually run rear soft and front mid and probably would only adjust the front bar to get more grip or sharpen turn in.

Rear traction is already challenging enough that I wouldn’t up the stiffness in the rear unless I had really soft springs or were in a low-power/low-speed scenario like autocross.
 

FLtrackdays

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As soft as you can tolerate will maximize mechanical grip.

I usually run rear soft and front mid and probably would only adjust the front bar to get more grip or sharpen turn in.

Rear traction is already challenging enough that I wouldn’t up the stiffness in the rear unless I had really soft springs or were in a low-power/low-speed scenario like autocross.
Great points coming from a MX5. Love your guys ( @garudathree included) input! Mine feels so good now. But maybe she’ll feel even better on softer sway settings 😍. I still haven’t gotten the race kids behind the wheel yet…
just copied the wiring and rough setup of the factory one, we're both using the lifeline light, mine is somewhat reversible
thumbphoto-004.jpg
You’re ride looks insane! Which series are you going to race in? The Thunder Bunny Supra is killing it in WRL!
I run the exact same. Felt much better on the big turns like turn 2 at Barber & 9 at NSS. Front I could go with Full stiff or Middle. Rear's I haven't liked anything but softest so far especially if it's any high speed track. I also have the Eibach springs too.
My Eibach springs were too low for one of the tracks down here. Mega glad they worked out for you! Assume you’ve got the euro spec ones. I still have mine if anyone can make em work. I need to post those and the Verus camber plates somewhere for sale.
 
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Can someone clarify for me, when people are referring to ‘one push for off’, what is this actually referring to. Does that mean VSC is being turned off but not traction control? I didn’t see anything in the owners manual that seemed helpful and I didn’t notice anything happening when doing a long hold on the traction off button on the center console. Thanks
 

razorlab

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Can someone clarify for me, when people are referring to ‘one push for off’, what is this actually referring to. Does that mean VSC is being turned off but not traction control? I didn’t see anything in the owners manual that seemed helpful and I didn’t notice anything happening when doing a long hold on the traction off button on the center console. Thanks
1 click turns off traction control. Long press turns off traction control + stability control. VSC = Vehicle Stability Control.

Stability control basically modulates the brakes if you are getting out of control. Also cuts some timing. It's not very invasive unless you are driving like an ape.

Traction control basically neuters everything: throttle, brakes, timing. If you are lowered on different size tires, etc it can be VERY invasive on the 2020's. It seems like each year after the 20, it was programmed to intervene a little less. On my 2020, it's basically undrivable on track with everything on. I run with 1 click off.
 

decodeddiesel

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1 click turns off traction control. Long press turns off traction control + stability control. VSC = Vehicle Stability Control.

Stability control basically modulates the brakes if you are getting out of control. Also cuts some timing. It's not very invasive unless you are driving like an ape.

Traction control basically neuters everything: throttle, brakes, timing. If you are lowered on different size tires, etc it can be VERY invasive on the 2020's. It seems like each year after the 20, it was programmed to intervene a little less. On my 2020, it's basically undrivable on track with everything on. I run with 1 click off.
Just daily driving at the speed of traffic on the square V730s will ofter trigger TC on my 2020 during some turns. 🤣 I can't believe how invasive it is on tires with a higher μ than stock.

My question is does Sport mode have any affect on the TC/VSC/allowable slip angle/wheel speed delta?
 

rwense

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Just daily driving at the speed of traffic on the square V730s will ofter trigger TC on my 2020 during some turns. 🤣 I can't believe how invasive it is on tires with a higher μ than stock.

My question is does Sport mode have any affect on the TC/VSC/allowable slip angle/wheel speed delta?
Don't quote me but I believe it does allow for more slip angle. I only drive on track in sport with 1 click (meaning TC is off). I've only really had VSC be invasive once and that was the other day coming out of the gulch at Pitt Race on Nankang CRSs that were probably way over temp. According to the tire temp monitor they were high 130-140°F. I squeezed the throttle adding more and more as I straightened out and gave it the boot a bit too early. Felt the tail step out a bit and as it started going a bit more I felt it kick in and straighten me out. Other than that I've never felt it other than trying to set it off.
 

FLtrackdays

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Just daily driving at the speed of traffic on the square V730s will ofter trigger TC on my 2020 during some turns. 🤣 I can't believe how invasive it is on tires with a higher μ than stock.

My question is does Sport mode have any affect on the TC/VSC/allowable slip angle/wheel speed delta?
You know me, I don’t know shit about the engineering but (I’ve stayed at a Holiday Inn 😝) I‘ve driven a ton in both modes. Bryan is right. It’s really hard to get VSC to come on (to feel it), unless I’m trying to induce a slide.

As far as the sport button, I’ve forgotten to hit it a whole session and was surprised how fast my lap times still were. So who knows how much it really makes a difference for what we’re doing. I’ve read in another thread somewhere that the drag guys turn if off. But I could be wrong about that.

Like you amigo, I’m just driving for fun. But love these questions! It is nice to know….
 

FLtrackdays

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Question came up in a Florida BMW chat I’m in with a fellow Supra owner. He‘s driving “off season” during our hottest times and is getting ”fuel starvation“ for the 1st time ever. Dude has been tracking his Supra longer than me. He’s in a 2021. I’ve never experienced true fuel starvation but have heard y’all mention it. Additionally, he hasn’t changed anything else in his car since we’ve driven together.

Could this be heat related? I’ve driven on fumes and my car was fine - same track. Mega odd it’s just starting to happening now. However I’ve seen the craziest stuff happen in this swamp heat over the years. Someone on the BMW chat suggested maybe he’s driving faster, exposing that limits he didn’t notice before 🤷‍♂️
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