Slow up shift at red line?

[Aryanenzo]

Hey guys, Just got my 21 Supra 3.0.

I am wondering if there's an explanation for this behavior. Sometimes when going to the redline and shifting at the orange part of the redline right before the red, the transmission takes a solid, what feels like an entire second to upshift. This is during manual operation.

I think Parker mentions the issue i'm having at 13:20 and his is a 2020.
EVERYTHING I HATE ABOUT MY 2020 TOYOTA SUPRA! - YouTube

Any thoughts?

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[Dannyvandelft]

Hey guys, Just got my 21 Supra 3.0.

I am wondering if there's an explanation for this behavior. Sometimes when going to the redline and shifting at the orange part of the redline right before the red, the transmission takes a solid, what feels like an entire second to upshift. This is during manual operation.

I think Parker mentions the issue i'm having at 13:20 and his is a 2020.
EVERYTHING I HATE ABOUT MY 2020 TOYOTA SUPRA! - YouTube

Any thoughts?

What mode is your transmission in? Normal or sport? Are you full on the gas pedal, or off of it? The computer calculates all kinds of parameters to find the best way to shift, even though you manually ask it to. If you're WOT in sport, it'll bang through the gears in a fraction of a second. If you're light on the throttle, it'll take it's time.

 

[Aryanenzo]

What mode is your transmission in? Normal or sport? Are you full on the gas pedal, or off of it? The computer calculates all kinds of parameters to find the best way to shift, even though you manually ask it to. If you're WOT in sport, it'll bang through the gears in a fraction of a second. If you're light on the throttle, it'll take it's time.

WOT, sport mode, manual shifting at red line. It rev hangs for a moment before shifting. I just spoke to a friend and he has the same thing with his 2020

 

[Dannyvandelft]

WOT, sport mode, manual shifting at red line. It rev hangs for a moment before shifting. I just spoke to a friend and he has the same thing with his 2020

Yeah you have to shift just before redline, not on it. Or you hit the limiter.

 

[BirdmanShepard]

I've just got my car off the dyno and noticed the same slow shift on WOT after it was tuned. I'm going to check if the same thing happens with tc off. Or maybe its trying to preserve the life of the trans? Have you been able to understand why it does that?

 

[RofoSupra]

If you’re letting it hit the red the engine cuts off automatically to prevent damage... if that’s what you’re experiencing, if you’re shifting before that, I’m not sure

 

[BirdmanShepard]

Even when shifting at 5k or 6k I've experienced the same thing. Exactly as Parker experienced in his video.

 

[MisterSkiz]

I noticed the same thing in my '21 while manually shifting - I wish the car had a shift beep or shift light in the HUD.

When I'm going wide open throttle in a long straight, I just shift before the red, not at it...the car is dropping power as you go up in the RPMs anyway.

https://www.supramkv.com/threads/2020-supra-vs-2021-supra-dyno-results.5811/

 

[underdonk]

Just for more data - I also experience this on my untuned '21. The ZF8 in Sport+ mode on automatic seems to be more aggressive, faster, and know what gear I should be in better than I do anyways.

 

[BirdmanShepard]

Just for more data - I also experience this on my untuned '21. The ZF8 in Sport+ mode on automatic seems to be more aggressive, faster, and know what gear I should be in better than I do anyways.

Did you code the Sport+ mode in? Do you experience the same issue in Sport+?

 

[underdonk]

Did you code the Sport+ mode in? Do you experience the same issue in Sport+?

Coded it in - same issue.

 

[BirdmanShepard]

Safe to say that stock and tuned Supras exhibit the same delayed gear shift. I'm assuming it is a protective measure.

If anyone is experiencing this issue, please post here. Investigating further.

 

[Evolution]

There is definitely a delay in shifting from 1st in manual mode. If I hit the flapper at 6k, it normally shifts by 6.5k. If you watch the gear indicator, you will see it instantly turns to 2, then shifts. This is why I leave my car in auto mode at the track. It can think faster than me and anticipate the shift, perfectly, every time.

 

[BirdmanShepard]

There is definitely a delay in shifting from 1st in manual mode. If I hit the flapper at 6k, it normally shifts by 6.5k. If you watch the gear indicator, you will see it instantly turns to 2, then shifts. This is why I leave my car in auto mode at the track. It can think faster than me and anticipate the shift, perfectly, every time.

While in auto, do you ever experience a brief rev-hang before it shifts?

 

[Evolution]

While in auto, do you ever experience a brief rev-hang before it shifts?

Nope, never. It always instant shifts in auto mode.

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