Part 3: The Quest for the Perfect Tune

[prj]

I did some prompts myself, after 3 prompts I got something usable for 2019-2024.
I have paid GPT btw, and even then I had to modify the prompt three times not to get completely hallucinated garbage data.

This is all in normal mode, doesn't count launch.

Model​	Stock Power (PS)​	Stock Torque (Nm)​	Tuned Power (PS)​	Tuned Torque (Nm)​	Power Gain (PS)​	Torque Gain (Nm)​
Taycan Turbo S​	625​	950​	800​	1050​	175​	100​
Taycan Turbo​	625​	850​	800​	910​	175​	60​
Taycan GTS​	510​	850​	800​	910​	290​	60​
Taycan 4S PB+​	489​	640​	730​	660​	241​	20​
Taycan 4S PB​	435​	640​	630​	660​	195​	20​
Taycan 4​	380​	640​	730​	660​	350​	20​
Taycan PB+​	380​	340​	480​	360​	100​	20​
Taycan PB​	326​	340​	480​	360​	154​	20​

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[Taycan4S_UK]

thanks - very helpful

 

[prj]

Here's the same for J1.2:

Model​	Stock Power (PS)​	Stock Torque (Nm)​	Tuned Power (PS)​	Tuned Torque (Nm)​	Power Gain (PS)​	Torque Gain (Nm)​
Taycan Turbo GT​	789​	1185​	1177​	1300​	388​	115​
Taycan Turbo S​	775​	985​	1080​	1160​	305​	175​
Taycan Turbo​	707​	890​	940​	990​	233​	100​
Taycan GTS​	605​	720​	940​	990​	335​	270​
Taycan 4S PB+​	517​	650​	940​	990​	423​	340​
Taycan 4 PB+​	435​	530​	940​	990​	505​	460​
Taycan PB+​	435​	380​	670​	690​	235​	310​
Taycan PB​	408​	370​	670​	690​	262​	320​

 

[gamueller]

Here's the same for J1.2:

Model​	Stock Power (PS)​	Stock Torque (Nm)​	Tuned Power (PS)​	Tuned Torque (Nm)​	Power Gain (PS)​	Torque Gain (Nm)​
Taycan Turbo GT​	789​	1185​	1177​	1300​	388​	115​
Taycan Turbo S​	775​	985​	1080​	1160​	305​	175​
Taycan Turbo​	707​	890​	940​	990​	233​	100​
Taycan GTS​	605​	720​	940​	990​	335​	270​
Taycan 4S PB+​	517​	650​	940​	990​	423​	290​
Taycan 4 PB+​	435​	530​	940​	990​	505​	460​
Taycan PB+​	435​	380​	670​	690​	235​	310​
Taycan PB​	408​	370​	670​	690​	262​	320​

Incredible

 

[69Mach390]

Incredible

The incredible part is the cost premium Porsche charges for a J1.2 Turbo S vs a 4.

Either the profit margins are huge on the turbo S or they’re losing money on the 4.

 

[gamueller]

A 670hp RWD sounds pretty good to me.

 

[td8]

Just installed this on my CT4 (2022).

Honestly—this is f*ing (excuse my French) ridiculous… in the best way.

It’s a completely different car—almost unrecognisable. And the crazy part is: when you’re driving normally, it still feels totally smooth and OEM (just with noticeably sharper response). But when you put your foot down… wow. The power is insane.

If you have a 4, this is an absolute no-brainer. I can’t recommend it enough.

The whole process was super easy. Dimitri was amazing—really helpful, replied to every email within a few hours, and you can tailor a few settings to your liking (regen). Installation was straightforward if you follow the video (the clips can be a bit of a pain), but overall it was very manageable.

10/10—best upgrade I’ve done, thanks @prj !!!

 

[PhillyTCT4S]

Same here. After purchasing my 4s I was thinking maybe later GTS or Turbo but honestly with the current tune and the options that I have in my 4s ( previous owner loaded it to the top) I think I will keep it. As TD8 mentioned in normal mode drives as before but the moment you switch to Sport, Sport + it is a rocket. Dont need more for my daily.
Highly recommend.

 

[Taycan4S_UK]

@prj I’ve been thinking about this for a while. From my limited observations, it seems like owners of the J1 Turbo/Turbo S have experienced more battery related issues, possibly due to the additional strain required to deliver higher power output. If that’s true, would a tune increase the likelihood of the J1 battery degrading faster or failing sooner?

 

[prj]

@prj I’ve been thinking about this for a while. From my limited observations, it seems like owners of the J1 Turbo/Turbo S have experienced more battery related issues

No.

If that’s true

It isn't.

would a tune increase the likelihood of the J1 battery degrading faster or failing sooner?

No.

 

[prj]

Btw just to clarify this - no tune that modifies the ASG can affect your battery or motors in any way whether positively or negatively. Does not matter if ours or someone elses.

The ASG is not responsible for safekeeping the battery or motors and has zero functionality related to that. It just asks the motors to produce a certain amount of torque, and the motors produce that torque based on their internal limitations and the allowed current draw by the BMS at that moment.

All the motor protection functionality is in the inverter controllers and all the battery protection/charging functionality is in the BMS. ASG modifications have zero effect on these protections.

 

[Mr.Smith]

Btw just to clarify this - no tune that modifies the ASG can affect your battery or motors in any way whether positively or negatively. Does not matter if ours or someone elses.

The ASG is not responsible for safekeeping the battery or motors and has zero functionality related to that. It just asks the motors to produce a certain amount of torque, and the motors produce that torque based on their internal limitations and the allowed current draw by the BMS at that moment.

All the motor protection functionality is in the inverter controllers and all the battery protection/charging functionality is in the BMS. ASG modifications have zero effect on these protections.

The question I've always been asked is if the battery is discharging so much faster and more often compared to stock, it will put additional strain on the battery. This will degrade the battery faster over time and that the battery wasn't designed for this.

 

[Taycan4S_UK]

The question I've always been asked is if the battery is discharging so much faster and more often compared to stock, it will put additional strain on the battery. This will degrade the battery faster over time and that the battery wasn't designed for this.

that's was my logic - simply more demand on the battery. Now there is nothing wrong with this and I would be interested in trying this tune but logic tells me that I will likely hit my battery limits quicker which in turn possible quicker mean time to fail. No faulty of the tune.

 

[prj]

that's was my logic - simply more demand on the battery. Now there is nothing wrong with this and I would be interested in trying this tune but logic tells me that I will likely hit my battery limits quicker which in turn possible quicker mean time to fail. No faulty of the tune.

The question I've always been asked is if the battery is discharging so much faster and more often compared to stock, it will put additional strain on the battery. This will degrade the battery faster over time and that the battery wasn't designed for this.

Just no to both of that.
Charge cycles and age is what reduces SoH. This is 99.9%.
Also charge speed and temperature during it.

You're talking about the other theoretical 0.1% or even 0.01%.
Discharge speed has basically zero measurable effect on it, especially since you spend at most a couple tenths of a percent of the time at wide open throttle.

Furthermore, driving at low SoC will have a magnitude higher effect of discharging the battery at a high rate relative to the state of charge, and cause a bigger voltage drop anyway.... Not to mention the peak discharge rate is carefully controlled by the BMS to the standards Porsche set for the battery.

Having the tune will not make your battery measurably lose SoH faster.

And I will go additionally into "failures" - there is not a single Taycan in the world where the battery has failed from old age. All the battery failures you're seeing is from manufacturing defects with the pouch cells. Having or not having a tune has absolutely zero effect on those. Even driving or not driving the car in many cases - they often just show up with age.

Even cars with 300 000km without the manufacturing defects have over 80% SoH on original batteries and run fine with the tune. We have tuned several very high mileage cars!

Stop spreading FUD. You are wrong. Case closed.

 

[chun]

To add to what prj says

https://www.mensjournal.com/gear/ne...ght-actually-help-your-ev-battery-last-longer

That being said, i didn't read the actual reserch to see what chemistry they tested, so if you want more details, go read. There's bound to be some differences based on the chemistry, unlikely to reach a complete opposite conclusion.

The only way harder acceleration hurts the battery or any other components is through excess heat, which one would assume all components have heat sensors and will throttle down - so no reason to worry.
Thermal limit being reach is unlikely to happen with sporadic full throttle acceleration. Maybe under constant load, say on a race track, it might cause reason to worry.

And of course, using more battery % results in more charging cycles, assumign you charge at a high speed, since charging at 11-22kw seems to have close to no impact - porsche doesn't even count the load from them as a charging cycle. And more charging cycles can mean lower SoH in time... that being said, I wouldn't worry much, my 2020 taycan at 85000km has only 52 charging cycles.

And even if it would damage the batteries, for most people with j1.1 batteries... well, they are bound to break anyway. Might as well give them some help, and hopefully you get a new battery soon

I plan to get myself the mod this summer, just couldn't be arsed with the whole process for now.

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