2025 RWD vs 2022 RWD Impressions (Long and Nerdy)

[Avantgarde]

I'm not that sure.

Results below are with TC in Sport + (J1.1)

Max. torque is avail. until 6000rpm and then gradually reduced above 10000rpm in 1st gear.

Switch to 2nd gear around 14500 rpm down to 8000 rpm, and torque again reduced after 10000rpm

it doesn't look too much manipulated at low rpm, unless the data acquisition rate is not small enough to capture it.

I got an OBDII earlier this week and also can confirm j1.1 gets you the full 340nm in first gear. When you enable LC, available torque goes up to 362nm (oddly 5NM higher than the official figure of 357nm). The only thing is there is some delay between the pedal input and torque is delivered during non-LC, normal driving. There is some sort of smoothing and torque “builds up” - which i think adds to the feeling of sluggishness.

Based on all my tests, J1.2 limits the torque in first gear though. (Assuming the PCM torque screen is accurate). No matter what i did i could not get the torque to the 4XX handle in the first gear. And it is always a logarithmic buildup (attaching a picture). I wish i had ordered the OBDII earlier so i could check the loaner too. Maybe an owner can check and confirm.

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[Avantgarde]

I'm not that sure.

Results below are with TC in Sport + (J1.1)

Max. torque is avail. until 6000rpm and then gradually reduced above 10000rpm in 1st gear.

Switch to 2nd gear around 14500 rpm down to 8000 rpm, and torque again reduced after 10000rpm

it doesn't look too much manipulated at low rpm, unless the data acquisition rate is not small enough to capture it.

This is great. I've been looking for this view for ages. (I use carscanner but don't get this level of fidelity, data loads every second or so not giving you this level of resolution). Do you mind, when you get a chance, getting this exact same view without the LC? I am really curious how it looks...

 

[Gru]

sure ! in a couple of days.

 

[D00notD00d]

@Avantgarde - were there any tyre differences between the two cars?

 

[freeforall]

I'm not that sure.

Results below are with TC in Sport + (J1.1)

Max. torque is avail. until 6000rpm and then gradually reduced above 10000rpm in 1st gear.

Switch to 2nd gear around 14500 rpm down to 8000 rpm, and torque again reduced after 10000rpm

it doesn't look too much manipulated at low rpm, unless the data acquisition rate is not small enough to capture it.

@Gru it might be interesting to plot the delivered power with and without LC. The idea is to understand when it is delivering the full 380hp/280kw and 476 hp/350kw in LC
I would plot Torque + power + speed on the same graph.
Thx

 

[Gru]

and to compare with others like Tesla. I found that one for a Model S (old version it seems)

 

[Johann55]

This is great. I've been looking for this view for ages. (I use carscanner but don't get this level of fidelity, data loads every second or so not giving you this level of resolution). Do you mind, when you get a chance, getting this exact same view without the LC? I am really curious how it looks...

Live Data view has much faster refresh rate - with 2-3 sensors selected - than standard dashboard screen. I ticked some random optimisations in adapter's advanced settings, maybe that helped too. Trip data seems to be saved in the app only after pressing Disconnect at the end of trip, else the trip is lost.

 

[Gru]

I ran 2 sets of tests :
- what is identical : the car (...), the driver (...), no passenger
- what is different : 2 different days (but similar weather - around 15°C), different locations but flat roads
- what I can update: metric system, but I can change that

on the tests:
- data acquisition: Carscanner + OBDII. Not very professional, but acquisition rate is around 60/70ms, enough for what follows
- SoC around 80-85%, battery temperature around 35°C
- I did 3 runs for each test. data were almost identical, so pretty confident on the results

the tests:
- Sport+ with LC. car is stopped; Launch Control activated, release brake pedal
- Normal. car is stopped; both pedals pressed (but no Launch Control), release brake pedal
- full throttle till 220 km/h / 140 mph
- and the car : RWD PB+ 2022

the results with short comments:

Gear shift:

no difference: in both modes, car goes from 1st to 2nd gear at 14500 rpm (125km/h / 78mph)

Power:
here you can expect a difference ... and there is one indeed:

minor difference up to 70km/h / 43 mph where the power reaches 280kW (we'll see that later on the torque curves). From there:
- Normal mode stays at 280kW, max. available. you can notice the change of gear at 125km/h
- Sport+ LC goes up to 350kW. It is slightly reduced when reaching 13000rpm and above, then switch to 2nd gear and goes back to 350kW. Above 11000rpm, it is slightly reduced, but still 330kW at 13000 rpm almost 20 sec. after launch as we can see right after
In other words, max. power is kept for 20 s (and more ?) when using LC?

0-200 km/h:
power being identical in the first seconds, LC procedure (with increased power) has a very limited influence on the first seconds. It is noticeable at higher speeds: it takes 3 seconds less to reach 200 km/h / 125 mph with LC

Max. torque:
these are interesting curves ... and I'm not sure how to interpret them. I should perhaps change to torque vs rpm.
- higher max. torque the first seconds, but rpm being small, resulting power is not much higher.
- then identical values with or without LC
- and slightly reduced max. torque at above 11000 rpm, in 1st and 2nd gear

one could then expect then similar power with or without LC but ....

actual torque:
... but actual torque is reduced in Normal mode as you can see below (displayed on two graphs, 4 curves on one wasn't clear enough), while in Sport+ LC, it sticks to the max. value. Porsche seems to play here by limiting the power to 280kW, while nothing prevent it to go to 350 kW in fact.

and the comparison of the two actual torques:

P.S. : I wonder how long the LC effect (350kW) is active .... soon another test !

P.S.S. : LC is a pretty useless feature in fact. you'll see the effect only at very high speeds, which you can "safely" try only in Germany on highway. You have to stop to launch it, ie even less chances to try it.
Actually I've never used it before these tests ... that was the first time!

 

[Avantgarde]

I ran 2 sets of tests :
- what is identical : the car (...), the driver (...), no passenger
- what is different : 2 different days (but similar weather - around 15°C), different locations but flat roads
- what I can update: metric system, but I can change that

on the tests:
- data acquisition: Carscanner + OBDII. Not very professional, but acquisition rate is around 60/70ms, enough for what follows
- SoC around 80-85%, battery temperature around 35°C
- I did 3 runs for each test. data were almost identical, so pretty confident on the results

the tests:
- Sport+ with LC. car is stopped; Launch Control activated, release brake pedal
- Normal. car is stopped; both pedals pressed (but no Launch Control), release brake pedal
- full throttle till 220 km/h / 140 mph
- and the car : RWD PB+ 2022

the results with short comments:

Gear shift:

no difference: in both modes, car goes from 1st to 2nd gear at 14500 rpm (125km/h / 78mph)

Power:
here you can expect a difference ... and there is one indeed:

minor difference up to 70km/h / 43 mph where the power reaches 280kW (we'll see that later on the torque curves). From there:
- Normal mode stays at 280kW, max. available. you can notice the change of gear at 125km/h
- Sport+ LC goes up to 350kW. It is slightly reduced when reaching 13000rpm and above, then switch to 2nd gear and goes back to 350kW. Above 11000rpm, it is slightly reduced, but still 330kW at 13000 rpm almost 20 sec. after launch as we can see right after
In other words, max. power is kept for 20 s (and more ?) when using LC?

0-200 km/h:
power being identical in the first seconds, LC procedure (with increased power) has a very limited influence on the first seconds. It is noticeable at higher speeds: it takes 3 seconds less to reach 200 km/h / 125 mph with LC

Max. torque:
these are interesting curves ... and I'm not sure how to interpret them. I should perhaps change to torque vs rpm.
- higher max. torque the first seconds, but rpm being small, resulting power is not much higher.
- then identical values with or without LC
- and slightly reduced max. torque at above 11000 rpm, in 1st and 2nd gear

one could then expect then similar power with or without LC but ....

actual torque:
... but actual torque is reduced in Normal mode as you can see below (displayed on two graphs, 4 curves on one wasn't clear enough), while in Sport+ LC, it sticks to the max. value. Porsche seems to play here by limiting the power to 280kW, while nothing prevent it to go to 350 kW in fact.

and the comparison of the two actual torques:

P.S. : I wonder how long the LC effect (350kW) is active .... soon another test !

P.S.S. : LC is a pretty useless feature in fact. you'll see the effect only at very high speeds, which you can "safely" try only in Germany on highway. You have to stop to launch it, ie even less chances to try it.
Actually I've never used it before these tests ... that was the first time!

This is amazing work. Thank you for doing this. We lost so much time debating how the curves looked for RWD in the past This explains it all and makes sense. I will comment more when I have time to review in detail...

 

[Gru]

This is amazing work. Thank you for doing this. We lost so much time debating how the curves looked for RWD in the past This explains it all and makes sense. I will comment more when I have time to review in detail...

I am still puzzled with Porsche's explanation on Launch Control:

How does it work? In simple terms it uses an overboost function, which is deployed for 2.5 seconds, that delivers extra power to the electric motors of the Taycan.

yes, there's an overboost in torque the first 2.5 sec, but the real difference is after these first 2.5 sec, where the power is not limited to 280kW.

 

[Avantgarde]

I am still puzzled with Porsche's explanation on Launch Control:

How does it work? In simple terms it uses an overboost function, which is deployed for 2.5 seconds, that delivers extra power to the electric motors of the Taycan.

yes, there's an overboost in torque the first 2.5 sec, but the real difference is after these first 2.5 sec, where the power is not limited to 280kW.

I thought their language is careful "overboost POWER (476hp) is limited to 2.5 secs" - Which i thought means:

1- the extra torque you get for the first 2-3 seconds should not count - given you are no where near the MAX HP zone at those RPMs
2- And maybe the extra torque you get at high speed (eg >170kmh) also does not count - given LC HP also drops below the max value during that time

Autotop NL also previously proved with a RWD PB+ that 100-200kmh acceleration is also materially improved when LC is enabled. So benefit of LC is definately not limited to 2.5 sec.

Clearly they distinguish between LC and non-LC modes outside of Max HP/Max Torque levels. This was also evident in J1.2, which technically has the same max torque and HP with and without LC. However, you get extra ~20nms of torque when using LC (while sill being under the max torque levels). I tested this out with the Loaner.

 

[Avantgarde]

@Avantgarde - were there any tyre differences between the two cars?

I should have checked the loaner. My tires are OEM Conti four seasons (nothing special).

 

[D00notD00d]

I should have checked the loaner. My tires are OEM Conti four seasons (nothing special).

I’ve noticed some MY2025s have Hankook tyres. I’ve not tried them but have found that Yokos and Bridgestone tend to have a negative effect on steering feel, ride and noise compared to others. I’ve noticed Porsche switching to cheaper tyres post launch.

 

[freeforall]

I’ve noticed some MY2025s have Hankook tyres. I’ve not tried them but have found that Yokos and Bridgestone tend to have a negative effect on steering feel, ride and noise compared to others. I’ve noticed Porsche switching to cheaper tyres post launch.

I’ve seen that the Hankook are fitted on the Turbo with the new aero design 21 wheels. The rear wheels are 285mm width vs 305mm on other 21 rims.

Porsche is still fitting similar tires though on the MY25 compared to previous generations for same rim sizes. However they are prioritizing the most efficient tires by default. Example the RS Spyder 21 wheels came with the Pirelli P Zero on my MY23 car. If you order a MY25 with the same wheels now it comes with Goodyear Eagle F1 Asymetric 5 which are much more efficient than the pirelli. However you can still get the Pirelli if you tick the free option « Performance summer tire »

BTW it is pretty easy to know which tires Porsche is fitting, you have a small tire icon on the configurator next to the rims, when you click on it, it displays all the tire details. Also when you change tires you can easily see the impact on the WLTP range in the technical details

 

[freeforall]

I ran 2 sets of tests :
- what is identical : the car (...), the driver (...), no passenger
- what is different : 2 different days (but similar weather - around 15°C), different locations but flat roads
- what I can update: metric system, but I can change that

on the tests:
- data acquisition: Carscanner + OBDII. Not very professional, but acquisition rate is around 60/70ms, enough for what follows
- SoC around 80-85%, battery temperature around 35°C
- I did 3 runs for each test. data were almost identical, so pretty confident on the results

the tests:
- Sport+ with LC. car is stopped; Launch Control activated, release brake pedal
- Normal. car is stopped; both pedals pressed (but no Launch Control), release brake pedal
- full throttle till 220 km/h / 140 mph
- and the car : RWD PB+ 2022

the results with short comments:

Gear shift:

no difference: in both modes, car goes from 1st to 2nd gear at 14500 rpm (125km/h / 78mph)

Power:
here you can expect a difference ... and there is one indeed:

minor difference up to 70km/h / 43 mph where the power reaches 280kW (we'll see that later on the torque curves). From there:
- Normal mode stays at 280kW, max. available. you can notice the change of gear at 125km/h
- Sport+ LC goes up to 350kW. It is slightly reduced when reaching 13000rpm and above, then switch to 2nd gear and goes back to 350kW. Above 11000rpm, it is slightly reduced, but still 330kW at 13000 rpm almost 20 sec. after launch as we can see right after
In other words, max. power is kept for 20 s (and more ?) when using LC?

0-200 km/h:
power being identical in the first seconds, LC procedure (with increased power) has a very limited influence on the first seconds. It is noticeable at higher speeds: it takes 3 seconds less to reach 200 km/h / 125 mph with LC

Max. torque:
these are interesting curves ... and I'm not sure how to interpret them. I should perhaps change to torque vs rpm.
- higher max. torque the first seconds, but rpm being small, resulting power is not much higher.
- then identical values with or without LC
- and slightly reduced max. torque at above 11000 rpm, in 1st and 2nd gear

one could then expect then similar power with or without LC but ....

actual torque:
... but actual torque is reduced in Normal mode as you can see below (displayed on two graphs, 4 curves on one wasn't clear enough), while in Sport+ LC, it sticks to the max. value. Porsche seems to play here by limiting the power to 280kW, while nothing prevent it to go to 350 kW in fact.

and the comparison of the two actual torques:

P.S. : I wonder how long the LC effect (350kW) is active .... soon another test !

P.S.S. : LC is a pretty useless feature in fact. you'll see the effect only at very high speeds, which you can "safely" try only in Germany on highway. You have to stop to launch it, ie even less chances to try it.
Actually I've never used it before these tests ... that was the first time!

Thanks for all these tests! In this context I am wondering what real effect the ECU upgrade proposed by redshift performance will actually have on the RWD. I will review further your tests to try to make sense of all of this.

One small note: It would have been good to test with Sport + without LC instead of normal to compare it to Sport + with LC. The car seems to be more reactive is Sport + so I am wondering what the torque curve would look like in Sport+ without LC

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