Yaris Cross - remapping

[Bradley Atkinson]

Has anyone remapped their yaris cross to make it a little quicker 

[FROSTYBALLS]

Split into new topic as subject not related to previous topic.

[forkingabout]

Not sure I've seen anyone remap a Toyota hybrid yet plus normally the ECU are well locked down to prevent any tinkering like this.

Does sport mode not encourage it to be a little more responsive? 

I'm still waiting for someone to stick the GR Yaris running gear into a Yaris Cross.

 

[RobertR]

What is the point to ruin original mapping to make Yaris Cross "a little quicker"?

22 minutes ago, forkingabout said:

Does sport mode not encourage it to be a little more responsive? 

It does, and to my surprise, it's a pretty big difference, compared to ECO mode.

[Mojo1010]

Don't think anyone would dare to tinker with such a car. It's a hybrid, designed to be as fuel efficient as it can be. Although I think the engine for this is on the weak side, the 1.8 engine on the new corolla would be much better. 

[forkingabout]

2 hours ago, Mojo1010 said:

Although I think the engine for this is on the weak side, the 1.8 engine on the new corolla would be much better. 

Would be a nice idea if the vehicle also had a Lexus make over at the same time.

[Yugguy1970]

The engine is an Atkinson cycle, which intrinsically is built for economy, not performance, and also naturally aspirated.  

IMO you would gain more by increasing the Battery and electric motor power.

[flash22]

It's a non-starter, adding any sort of power upgrade will affect the damper plate - it's not a conventional engine map either, torque and rpm is also limited due to MG1 and MG2 and the fact the M15a-fxe does not have a balance shaft

 

You purchased the wrong vehicle

25 minutes ago, Yugguy1970 said:

IMO you would gain more by increasing the battery and electric motor power.

it's not viable as it would require changes to the hybrid control, BMS, DC - DC and major work to the inverter

[anchorman]

4 hours ago, flash22 said:

It's a non-starter, adding any sort of power upgrade will affect the damper plate - it's not a conventional engine map either, torque and rpm is also limited due to MG1 and MG2 and the fact the M15a-fxe does not have a balance shaft

 

You purchased the wrong vehicle

it's not viable as it would require changes to the hybrid control, BMS, DC - DC and major work to the inverter

You say that with such conviction.  How do you know what the breakaway torque is of the clutch?

[flash22]

There are already issues with these dampers, add more power and/or torque is likely to cause issues and more "hybrid system malfunctions"

It's an eco car at the end of the day designed for low emissions, a high MPG

[Jimota]

7 minutes ago, flash22 said:

There are already issues with these dampers, add more power and/or torque is likely to cause issues and more "hybrid system malfunctions"

It's an eco car at the end of the day designed for low emissions, a high MPG

Your last sentence sums it up really.  Well put and accurate.

[IT Troll]

What sort of impact on mpg does the Sport mode have? I’ve never actually tried it.

[TonyHSD]

28 minutes ago, IT Troll said:

What sort of impact on mpg does the Sport mode have? I’ve never actually tried it.

It might have minimal or no impact at all. The sport mode only sharpens the throttle response. It is usually recommended for driving long uphill , higher motorway speeds or fully loaded car. It makes it easy on your foot because the accelerator becomes more sensitive and the car respond faster to any input. If you can control the accelerator precisely you can always drive in sport and maintain good mpg. 
Eco mode on the other hand is exactly opposite, it makes everything slow and sluggish., therefore best mode is Normal mode. Eco can save you 2-3 mpg because it will reduce unnecessary engine kicks in where sport mode will eventually loose 2-3mpg because will make you use the engine earlier and more often. 
Toyota hybrids can offer very fun and engaging experience but the driver needs to learn about the tech and how everything works under the hood. Mastering accelerator control and you can mimic fast gear changes , different regenerative braking, pulse and glide, reduce the rubbery cvt scream and make the drive a lot more pleasant. 👍

[Bob66]

10 hours ago, TonyHSD said:

Toyota hybrids can offer very fun and engaging experience but the driver needs to learn about the tech and how everything works under the hood.

Rubbish.....I don't know how to lift the hood...let the "tech" do what you have paid it to do.

[SinglePointSafety]

To be fair Bob66, I think Tony's point (although you might legitimately query the words used) is that developing a degree of mechanical sympathy and discovering how the car responds in real-life driving can result in a more enjoyable driving experience. That's certainly been the case for me, helped by the knowledgeable folk here who have explained the tech in an understandable fashion: this Yaris Cross spends a lot more time in EV mode than our old Mk3, and I can now see why, and drive to take advantage of that

Tony, thanks for the info ref Eco mode, not tried it yet, and it sounds like there's little reason to do so given my style of driving

[Mojo1010]

Think he meant learn how the tech work which may help with getting the best out of the car, not learn how to be a mechanic side of things. 

Think the MK4 Yaris has better mpg and some extend better power than the MK3 because of the new Battery lithium ion. 

 

[TonyHSD]

Hi guys, 

please excuse me for any confusion caused perhaps by my poor English. Mojo and Keith got me right 👍.
It’s not about to fix things or intervene in any other way but to get used to the car and how it operates , then you can get more out of it, for your money. Automatic systems are made to help drivers, not to replace them.
Anything automatic in these cars still requires correct drivers input to work at it’s best. If someone prefer to be an auto journalist like is their choice, driving different cars on daily basis and when inside mashed them to the floor and expect miracles to happen, it will not, at least not with Toyota hybrids because these are built for efficiency not for the sport. 👌

[Yugguy1970]

From what I can tell, in Normal mode on both the yaris and the rav, even foot to the floor it doesn't seem to give full power to the motor, but in sport it does.  When cruising there isn't much difference in behaviour I can see.

Rav being heavier you really do notice a difference in max acceleration between Normal and Sport.

That said, if you want a sporty drive don't buy these cars, that's not what they are about.  They can go quite quickly but it doesn't suit them, engine is at max revs and noisy.  If I need to get past something quickly, I stick in Sport, get past, then back to Normal quiet wafting.

[davidif]

5 hours ago, Yugguy1970 said:

From what I can tell, in Normal mode on both the yaris and the rav, even foot to the floor it doesn't seem to give full power to the motor, but in sport it does.  When cruising there isn't much difference in behaviour I can see.

Rav being heavier you really do notice a difference in max acceleration between Normal and Sport.

That said, if you want a sporty drive don't buy these cars, that's not what they are about.  They can go quite quickly but it doesn't suit them, engine is at max revs and noisy.  If I need to get past something quickly, I stick in Sport, get past, then back to Normal quiet wafting.

Agreed, my 2.0 Corolla performs well (especially in Sport mode) although I still wouldn't call it a sporty drive.

If I feel the need for a sporty drive I take the GT86, horses for courses!

[IT Troll]

On 1/19/2023 at 10:27 AM, Yugguy1970 said:

From what I can tell, in Normal mode on both the yaris and the rav, even foot to the floor it doesn't seem to give full power to the motor, but in sport it does.

Interesting, I've had a couple of situations when more power would have been useful. Remembering to switch modes in the moment is the tricky thing. From the manual it sounds like Power/Sport mode gets deactivated when you switch off.

[forkingabout]

12 minutes ago, IT Troll said:

From the manual it sounds like Power/Sport mode gets deactivated when you switch off.

I know my C-HR defaults back to normal mode when you switch it off.

It's very rare I bother with selecting sport mode & I've never used eco mode.

[Yugguy1970]

1 hour ago, IT Troll said:

Interesting, I've had a couple of situations when more power would have been useful. Remembering to switch modes in the moment is the tricky thing. From the manual it sounds like Power/Sport mode gets deactivated when you switch off.

Aye and often I don't remember to press the sport button.

[Bradley Atkinson]

On 1/17/2023 at 12:12 AM, FROSTYBALLS said:

Split into n

On 1/17/2023 at 10:46 PM, TonyHSD said:

It might have minimal or no impact at all. The sport mode only sharpens the throttle response. It is usually recommended for driving long uphill , higher motorway speeds or fully loaded car. It makes it easy on your foot because the accelerator becomes more sensitive and the car respond faster to any input. If you can control the accelerator precisely you can always drive in sport and maintain good mpg. 
Eco mode on the other hand is exactly opposite, it makes everything slow and sluggish., therefore best mode is Normal mode. Eco can save you 2-3 mpg because it will reduce unnecessary engine kicks in where sport mode will eventually loose 2-3mpg because will make you use the engine earlier and more often. 
Toyota hybrids can offer very fun and engaging experience but the driver needs to learn about the tech and how everything works under the hood. Mastering accelerator control and you can mimic fast gear changes , different regenerative braking, pulse and glide, reduce the rubbery cvt scream and make the drive a lot more pleasant. 👍

Hi TonyHSD

Can you please explain these techniques of driving as i know nothing about hybrids and how to get the best from then. Thanks : )

 

[TonyHSD]

30 minutes ago, Bradley Atkinson said:

 

Honestly no need to flip between modes. Because the car has no gears or way to choose how the power been delivered (how much ice and how much ev) it’s all automatic but the whole process is controlled via the ecu which follows driver input. The driver input its actually the precise accelerator control. 
The drive modes are mostly to ease the driver accelerator control and prevent fatigue on your foot from been to gentle while in sport or too hard while in eco. Normal mode is the best as the name suggests it makes the car feel natural like driving any other cars.

For the techniques the most efficient way is called “pulse and glide “ - it’s basically a smooth acceleration on both petrol and ev power and once the. Desired speed has been reached release the accelerator a bit and the car will flip into ev mode, depress accelerator again slightly to maintain speed while remaining in ev mode. This can be done at slow town speeds or higher motorway speeds , and when the car speed exceeds the hybrid system speed capability in ev mode the engine will kick in and  idle at 1000rpm or slightly higher and help from time to time.propel the car. This can be felt like slightly abrupt (rough engine work) and some more vibrations,. it is very similar noise to airplane engines when preparing to land , it’s like something that is rotating is overriding another thing that rotates at different rpm. 
The most efficient way to start the car from standstill is smooth ev drive for the first 1-2 meters and smooth switch to ice. 

Now for the fast acceleration - there are different ways to do it but in some cases is more economical to push the car to the floor for a shorter time to gain speed quicker and then release a bit to maintain constant cruising speeds . This can be done when joining motorways, overtaking lorries etc or when approaching steep hills. The reason for that is that when you push more then hybrid system seek more help from the electric motor and the car comes to live , instead of accelerating with half way through pushed and the engine is screaming and nothing happens, when pushed hard even the generator mg1 helps to move the car even with low Battery. Note: hard accelerations will use your hybrid Battery more, but then after relax cruising the Battery will get charge up again from the engine. This is the Toyota hybrid magic. 
👍

[anchorman]

5 hours ago, TonyHSD said:

Honestly no need to flip between modes. Because the car has no gears or way to choose how the power been delivered (how much ice and how much ev) it’s all automatic but the whole process is controlled via the ecu which follows driver input. The driver input its actually the precise accelerator control. 
The drive modes are mostly to ease the driver accelerator control and prevent fatigue on your foot from been to gentle while in sport or too hard while in eco. Normal mode is the best as the name suggests it makes the car feel natural like driving any other cars.

For the techniques the most efficient way is called “pulse and glide “ - it’s basically a smooth acceleration on both petrol and ev power and once the. Desired speed has been reached release the accelerator a bit and the car will flip into ev mode, depress accelerator again slightly to maintain speed while remaining in ev mode. This can be done at slow town speeds or higher motorway speeds , and when the car speed exceeds the hybrid system speed capability in ev mode the engine will kick in and  idle at 1000rpm or slightly higher and help from time to time.propel the car. This can be felt like slightly abrupt (rough engine work) and some more vibrations,. it is very similar noise to airplane engines when preparing to land , it’s like something that is rotating is overriding another thing that rotates at different rpm. 
The most efficient way to start the car from standstill is smooth ev drive for the first 1-2 meters and smooth switch to ice. 

Now for the fast acceleration - there are different ways to do it but in some cases is more economical to push the car to the floor for a shorter time to gain speed quicker and then release a bit to maintain constant cruising speeds . This can be done when joining motorways, overtaking lorries etc or when approaching steep hills. The reason for that is that when you push more then hybrid system seek more help from the electric motor and the car comes to live , instead of accelerating with half way through pushed and the engine is screaming and nothing happens, when pushed hard even the generator mg1 helps to move the car even with low battery. Note: hard accelerations will use your hybrid battery more, but then after relax cruising the battery will get charge up again from the engine. This is the Toyota hybrid magic. 
👍

Very eloquently written Tony.  Find me something that says MG1 drives the car.