RLe55

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Fellow Taycan owners, I recently did the ECU upgrade on my '23 etron GT and wanted to give my unbiased review and opinions about the experience. Since the etron GT's equivalent is the Taycan 4s, I figured I'd share my experience with you all.

I also want to call out both @Mr.Smith and @redshift-performance with answering all of my lingering questions and providing full transparency and their experiences. Their insights/knowledge were truly instrumental in the decision to move forward with the upgrade.

Vehicle specs:

'23 etron GT Prestige
Performance Package
Full Leather Package
21" RS wheels

ECU upgrade options enabled:
  • Increase of maximum peak power
  • Availability of increased peak power (overboost) at all times
  • Removal of maximum speed limiter
  • Increased recuperation torque
  • Drivability adaption for an unfiltered throttle response (removes delay from acceleration pedal aka "Paul Smith" special)


Numbers (after upgrade):

Battery SoC: > 91%
0-100 km/h: 3.59s
100 - 200 km/h: 6.88s
1/4mile: 11.33 @ 204.10km/h (126.82mph)

Porsche Taycan Review & Results: ECU Performance Upgrade - Stage 1 from Redshift Performance RLe55-ecu-upgrade-times


I have no baseline numbers to compare too. That data was on a guest dragy account and has been lost


Overall experience:
I also wanted to cover the upgrade process, which was simple and easy. I simply removed the ASG, as documented by Redshift Performance and shipped it out next day air. The ASG was returned within 2 days so overall downtime was 3 days. An option to get a secondary, cloned ASG with the factory file was available but I opted out.

Driving experience:

Wow. Car is absolutely alive now. Having the overboost enabled at all times, in all ADS settings, is a game changer for the GT. Car accelerates with absolute force without issue. Over taking at speeds is where you see the real gains. It's literally effortless to point to the position you want to be on the road and it places you there will minimal effort. Mind you, this is already a capable car from the factory from any aspect but this is now on a whole other level. Also, if you've wondered what the impact is to the battery/drivetrain, I assure you that you're safe because if pushed hard enough, the car will reduce power as needed. So, there are safeties/protective measures that come into play.

In factory form, I've never encountered any pulls back in power, at any time

Max speed limit:

Confirmed. While in Mexico, I've been able to exceed the stock limit of 152 MPH/245km/h with ease. As mentioned previously regarding the safety measures, I began to experience the pull back in power once mid 160mph speeds were sustained

Drivability adaption:

An absolute must for this vehicle. I was always annoyed, as most of you have been, by the delay in response when stepping on the accelerator. I get it, this is a "GT" but it felt sluggish at times and you don't get the full brunt of the car's power and in certain situations, you'd want that to not be the case. It's now incredibly snappy..almost whiplash inducing, from any speed. Now, from my understanding, the Taycans have options on how responsive, or not, to make the vehicle. Not sure why anyone would want anything less than crisp, no lag, in acceleration. Especially in a vehicle such as the GT.

Increased charging speeds:

I can attest this upgrade has enabled the vehicle to sustain higher charge rates, especially when the battery is presently at a high SoC (90%+). Regardless of the performance at your local EA charger, most of which are just horrid, you can see the increased charge rates. For example, was at a EA station near me where the max charge hit 104kW/h, I managed to sustain a charge rate of ~48kW/h, while the SoC exceeded 94%+ and up to 99%. I suspect with a properly performing charging station, I may see a higher sustained rate.


Overall, I couldn't be any happier with the upgrade and the whole experience. It is truly a game changer that Redshfit Performance has brought to the table.
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Mr.Smith

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On the 100-200km, an upgraded Taycan 4s will be slightly faster an a stock Turbo S which is 7.1sec compared to 6.88sec
The lower Taycan Variants benefit the most from the upgrade
 

whitex

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I can attest this upgrade has enabled the vehicle to sustain higher charge rates, especially when the battery is presently at a high SoC (90%+)
I am curious. How does an engine ECU (motor controller) affect charging speeds? I’m trying to understand the impact of this upgrade on different car components and functions.
 

Mr.Smith

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I am curious. How does an engine ECU (motor controller) affect charging speeds? I’m trying to understand the impact of this upgrade on different car components and functions.
ASG controls power in and out of the HV battery.
That's how you can also get increases Regen.
Taycan might not benefit as much as E-Tron GT because E-Tron GT is software limited on fast charging compared to Taycan
 

whitex

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ASG controls power in and out of the HV battery.
That's how you can also get increases Regen.
Taycan might not benefit as much as E-Tron GT because E-Tron GT is software limited on fast charging compared to Taycan
What does the upgrade increase the regen from-to on the Taycan?
 


whitex

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That is a new feature that I didn't chose so I can't speak on it
Mario @redshift-performance explained it as closer to 1 pedal.
Ok, that would be only throttle-off regen mapping, rather than max regen blended braking limit, which the increased charge rate would imply the update does.
 

WasserGKuehlt

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Ok, that would be only throttle-off regen mapping, rather than max regen blended braking limit, which the increased charge rate would imply the update does.
The initial post does mention increased HPDC charging speed - 40+kW at near full. (I don’t remember what is the default.)

So I am still confused - are we taking about regen power, charging-equipment/system power, both?
 


whitex

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The initial post does mention increased HPDC charging speed - 40+kW at near full. (I don’t remember what is the default.)

So I am still confused - are we taking about regen power, charging-equipment/system power, both?
Perhaps we need some further clarification from @redshift-performance.
 
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RLe55

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The initial post does mention increased HPDC charging speed - 40+kW at near full. (I don’t remember what is the default.)

So I am still confused - are we taking about regen power, charging-equipment/system power, both?
Charging the battery, not regen. At high SoC, I would only be able to sustain -18kW, falling to as much as 7kW
 

redshift-performance

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What does the upgrade increase the regen from-to on the Taycan?
Our tuning increases the available recuperation torque by about 20% in each mode. It will feel more like 1-pedal driving but not quite like some other EVs.
 

WasserGKuehlt

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Our tuning increases the available recuperation torque by about 20% in each mode. It will feel more like 1-pedal driving but not quite like some other EVs.
Thank you; can you comment on this post by @RLe55, please? Does the tune change the charging curve of the car? I would find that a bit unsettling.
 

whitex

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Our tuning increases the available recuperation torque by about 20% in each mode. It will feel more like 1-pedal driving but not quite like some other EVs.
So 20% higher regen only when lifting off the accelerator, or 20% higher regen across the board? For example, Taycan can regen up to 270KW when using blended braking (which is significantly higher than Tesla's ~60KW max). Are you saying this upgrade lifts 270KW limit to 324KW max regen during braking?
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