Accel. Pedal input delay - MY2023 6MT

[MA617M]

Has anyone else noticed with the 6MT a throttle 'deadband' or 'hestiation' on application of small throttle inputs - say 5%?

EG - you're cruising at a constant speed around town, in 4th/5th (gear doesn't matter)

You apply a small throttle input - a normal "just cruising" amount - and there is a noticable delay before the engine responds.

If you do this and release immediately - the car doesn't register the throttle input at all. It feels like a delay, perhaps 0.2-0.5 seconds.

Has anyone else noticed this? It gives a very non-linear and artificial feeling - one I haven't noticed in other cars with DBW.

Details:
Nov 2022 build 6MT 285kW 6-port engine
More noticable in 'normal' mode, less in sport
Not noticable with larger throttle inputs (eg >20%)
Not gear/RPM dependant - even 2nd gear at 4500rpm, still an input delay
Car is still fresh, 160km (100miles) on the car
Car has catback exhaust (Don't see how that would be any different though)
Driven with VSC/TRC OFF (long hold of button)

Is this normal, expected behaviour? It really feels shit and artificial.

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[FuzzyRev]

Normal Mode greatly desensitizes the throttle response for smoother driving, as it's designed that way. The DME is also still in learning mode, so things will adapt and change a bit as you put more miles on. Don't worry about it.

 

[MA617M]

Cool, I'm hoping that's the case. Typically I drive in sport with TRC off... I was in normal mode to reduce the burbles, because I am old, but put into sport for the above reason and it's still annoying.

 

[BMWAF]

Hmm.. this might be what I was trying to describe during my test drive a while back. Hopefully it sorts itself out in time.

 

[Boataur]

I’m at almost 1k miles and haven’t noticed this.

 

[Joebednar4]

My 2020 100% does this, and it's absolutely annoying. I need to do the relearn process and see how it does.

 

[Wolfpacguy]

Are there any throttle controllers for the Supra ? That solved the problem on my mustang. Just a thought

 

[jtsang25]

My 2020 100% does this, and it's absolutely annoying. I need to do the relearn process and see how it does.

Yours might be the throttle hesitation issue that exists. There's a whole thread about it.

 

[Supra_UK_]

I have a '23 MT and I think (I'll try to pay more attention next time) I do know what you mean and you may have a point, but pretty sure it's only in comfort/normal mode so I just took that as an acceptable / eco related lag.
If it's consistent I wouldn't say it's an issue/fault just something to get used to IMO.

 

[Joebednar4]

Yours might be the throttle hesitation issue that exists. There's a while thread about it.

Ahhh gotcha. I thought this was a little different than what I was expecting, but I felt left out and wanted to bitch about it Thank you!!! I'll look for that thread!

 

[MA617M]

A good way to see this issue:

Use the 'sport displays' screen
press the accelerator a bit (you want about 3kW/4hp)
See how long it takes before the screen registers 3kW - from the time you pushed the pedal

It's not long, but it's enough to feel unnatural.

 

[mkvB58KING]

I get something similar when trying to accelerate from a dead stop. It seems to be worse in the rain. I put my foot down, car goes nowhere. It's scary because it usually happens while turning into traffic. Going into traction mode eliminates this issue, which leads me to believe its the TC causing problems. Some other folks have the same problem, I've yet to see a fix. My car is a 2020 and has had several dealer software updates.

 

[cinosa]

I've been experiencing this issue since new in my '22. It also appears to be totally random when it happens, as I can't reliably reproduce the problem, but when it happens it's when I'm using ~5% throttle and the car just does not respond for 2-3 seconds, then it starts moving.

From what I can remember, it's only ever happened when accelerating from a stop, hasn't happened when already moving. I've been driving the car in manual mode almost exclusively for the last month or more and I haven't noticed it since.

 

[Kolme]

I’d recommend all of you to check out this thread. Throttle hesitation relating to traction control issues is fairly well documented.
Throttle Hesitation

Summary:

1. Problem: Randomly the car from a stop or slow start will have a very significant delay in throttle.
2. Cause: Something to do with TC/VSC, likely software.
3. Solution: Some drive with TC off. Some have luck in start first minute with TC/VSC off and then turning back on. Some had resolution after a software update.
   

 

[alan7467]

Are there any throttle controllers for the Supra ? That solved the problem on my mustang. Just a thought

I haven’t been active enough on this forum to notice if anyone has tried this here yet, but Dinan, APR, etc, started selling this throttle mapping controller somewhat recently. I’ve seen some folks on the G42 Bimmerpost forums talk about it. Seems to help with perceived throttle sensitivity. Not so sure it’d help with the traction control issues others have brought up in this thread.

https://www.dinancars.com/products/software-tuning/throttle-tuning/parts/D440-1700

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