Redshift vs MapEV

[V8Turbo1974]

Pretty sure they do come on in auto mode. I remember seeing that on my Turbo S, and there's a whole module in ASG for it iirc.

Tested mine and brake lights only come on when applying the brake pedal. I think that’s right, the deceleration from regen, is no different to a petrol manual gearbox car, in my opinion. I believe Tesla’s brake lights come on in regen, maybe due to one foot driving?

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[prj]

Tested mine and brake lights only come on when applying the brake pedal. I think that’s right, the deceleration from regen, is no different to a petrol manual gearbox car, in my opinion. I believe Tesla’s brake lights come on in regen, maybe due to one foot driving?

There is not enough regen normally to trigger it, you have to be over a certain amount. If you just have the small lift off regen that's not more deceleration than normal engine braking.

 

[SoccerMan94043]

Tested mine and brake lights only come on when applying the brake pedal. I think that’s right, the deceleration from regen, is no different to a petrol manual gearbox car, in my opinion. I believe Tesla’s brake lights come on in regen, maybe due to one foot driving?

Telsa has a formula based on your current speed and the amount you are decelerating, on when to put on the brake lights. In my experience driving around Teslas in the SF Bay Area is that it's mostly ok, but errs to showing the brake lights too early resulting in what looks like two footed driving behavior.

 

[69Mach390]

Hopefully the brake lights are a non-issue.

If anyone follows a Porsche too closely they need to have extreme confidence in their braking ability and insurance coverage.

 

[AutoX]

The gearshift is at ~130km/h. Majority of the difference is above 60km/h. It accelerates 25% faster after that. So if your 100-200 time is e.g. 14 seconds, you would expect around 11.5 seconds with the tune.

I don't think I have actual Dragy measurements from a RWD, but we've done quite a few and people have been satisfied with the result.

Maybe this graph is more interesting:

I'd say the difference is fairly significant at higher RPM. It shifts at 125-130km/h with the tune, which is around 15500 rpm on the chart, and after the shift is complete you're right at 8000 rpm again, where you have the extra power.

Depends really how you drive it, if you just drive it around town, then there's not much to it, but out of town there is significantly more performance for overtaking and merging onto the highway.

Just depends on your usage I guess

Isn't this just the power with launch control? The PB+ RWD comes with 469hp when in lauch control from the factory and that looks like the graph above. So your tune will essentially allow access to that power outside of launch control?

 

[prj]

Isn't this just the power with launch control? The PB+ RWD comes with 469hp when in lauch control from the factory and that looks like the graph above. So your tune will essentially allow access to that power outside of launch control?

Yes, exactly the car runs maxed out in launch control from factory, and we allow it to enter launch mode any time the throttle is floored (even while moving).
The standard launch control is not terribly useful when overtaking or merging, or in fact in 99% of driving situations.

 

[Dee]

I have the Redshift tune (way before MapEV was available) and I also wanted the Vmax limiter disabled.
It doesn't work.
I'm still not able to go over 272 km/h.
It has something to do with saturation of the motor(s), max amps through the inverter and/or max rpm of the motor.
It was of no extra cost so I'm ok with that.

 

[prj]

I have the Redshift tune (way before MapEV was available) and I also wanted the Vmax limiter disabled.
It doesn't work.
I'm still not able to go over 272 km/h.
It has something to do with saturation of the motor(s), max amps through the inverter and/or max rpm of the motor.
It was of no extra cost so I'm ok with that.

16000 rpm limiter in rear motor. But everything except the Turbo S is limited below that speed in the ASG. So yes, on the Turbo S you can't do anything with VMAX, however on the rest you can increase it to Turbo S level (270km/h indicated).

 

[Dee]

16000 rpm limiter in rear motor. But everything except the Turbo S is limited below that speed in the ASG. So yes, on the Turbo S you can't do anything with VMAX, however on the rest you can increase it to Turbo S level (270km/h indicated).

Actually, in theory, you can.
By running a bigger tire or a 22" rim on the rear.
But then you would run into max current of the inverter, right?
Anyway, 270 is fast enough and quite comfortable, it feels better than a 992 C4S....

 

[prj]

Actually, in theory, you can.
By running a bigger tire or a 22" rim on the rear.

Yes or by modifying the final drive, the indicated speed would not change though, as it's not GPS based.

But then you would run into max current of the inverter, right?

I am not sure what you mean, the current limits the maximum output torque, not the power, which is irrelevant for top speed. It's purely a RPM limitation, the Weissach goes 305km/h by having a different final drive.

 

[Dee]

I am not sure what you mean, the current limits the maximum output torque, not the power, which is irrelevant for top speed. It's purely a RPM limitation, the Weissach goes 305km/h by having a different final drive.

You're right, I mean:
To go only a few kph faster you need way more power to maintain the torque, I guess there's a limit on that power too as this comes from the battery, not the inverter.

 

[prj]

You're right, I mean:
To go only a few kph faster you need way more power to maintain the torque, I guess there's a limit on that power too as this comes from the battery, not the inverter.

The car has enough power to go 320+km/h, it's not the problem.

 

[Mr.Smith]

Yes or by modifying the final drive, the indicated speed would not change though, as it's not GPS based.

I am not sure what you mean, the current limits the maximum output torque, not the power, which is irrelevant for top speed. It's purely a RPM limitation, the Weissach goes 305km/h by having a different final drive.

Turbo GT has the same hardware as the Weissach and just software limited?

 

[prj]

Turbo GT has the same hardware as the Weissach and just software limited?

yep

 

[Dee]

The car has enough power to go 320+km/h, it's not the problem.

I'm running 335/25/22 rear (and 265/35/21 front) which is about 10 mm bigger in diameter but I haven't tried topspeed yet with this setup.
It should be a little faster then (GPS-wise).

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