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Pack Performance and Launch Mode Limits
- Thread starter Ingineer
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- Tesla Inc.
Where are the Norwegians when we need them !
SDRick
Active Member
Any thoughts on the launch reduction algorithm being based on all standstill launches or only those at Max battery and high battery SOC?
Also, what is the easiest method for individual owners to test for pertinent performance metrics and help shed some light on this issue?
Also, what is the easiest method for individual owners to test for pertinent performance metrics and help shed some light on this issue?
@SDRick, Take your car to a drag strip with as high a SOC as you can get. Make a few runs with Launch Mode and note your 60' and 1/4-mile times. Now repeat the above (maintaining a high SOC) until the numbers drop noticeably. Congratulations! You've discovered the launch limit. 
Now isn't that interesting . . . oh to know what's going on inside HQ's, and how many launches we're actually allowed.
Isn't just solving the problem with low-cost upgrades into P100D's a whole lot better than waiting for a class action lawsuit (and concurrent bad press)?
Come on Elon, step up and fix this.
Now please.
Thx.
Here is the deal..
This only impacts P90Ds. There is a lifetime counter on launches. However, to count as a launch a bunch of crieteria must be met:
1. Launch mode must be on
2. SOC must be >90%
3. Perfect traction must be maintained. Any amount of slip will cause power to be reduced and it won't count.
The limit is 25 for the rear drive unit. If this limit is hit, power is reduced slightly resulting is a difference of 0.05s 0-60.
Basically, unless you regularly take your car to the drag strip and can manage to maintain perfect traction while meeting all or the other conditions above, this is a non-issue.
I encourage everyone not to blow this out of proportion.
This only impacts P90Ds. There is a lifetime counter on launches. However, to count as a launch a bunch of crieteria must be met:
1. Launch mode must be on
2. SOC must be >90%
3. Perfect traction must be maintained. Any amount of slip will cause power to be reduced and it won't count.
The limit is 25 for the rear drive unit. If this limit is hit, power is reduced slightly resulting is a difference of 0.05s 0-60.
Basically, unless you regularly take your car to the drag strip and can manage to maintain perfect traction while meeting all or the other conditions above, this is a non-issue.
I encourage everyone not to blow this out of proportion.
What is your source for the specific numbers you give above?
All I can say is it's accurate, and if we still had rep points I'd say "trust me".
lolachampcar
Well-Known Member
Ok
I'm updating my sub set of as sub set to
sub set of a sub set of a sub set
The numbers affected will be very small and easily handled very quietly on a case by case basis (and if not handled quietly, I'm get out my self inflicted wound routine again).
I'm updating my sub set of as sub set to
sub set of a sub set of a sub set
The numbers affected will be very small and easily handled very quietly on a case by case basis (and if not handled quietly, I'm get out my self inflicted wound routine again).
Well, thanks for the info, but I'm not so sure about the count. Our P90D just seems generally slower of late, but to honest, our last "launch" was with SOC under 90%.
Am charging now just to test it again...and I seriously doubt it's only a 5/100ths of a second hit to acceleration.
I'm unsure if this is accurate. @andrewket says the limit if for the rear drive unit... but that doesn't seem to fit with the data. The BMS is what specifies max current, not the drive unit.
The drop is from ~1600A to ~1500A (really like 1609 ro 1515 or something, dont have the numbers in front of me). That's significant. Comes out to roughly 40 HP.
The drop is from ~1600A to ~1500A (really like 1609 ro 1515 or something, dont have the numbers in front of me). That's significant. Comes out to roughly 40 HP.
Disliking for a lack of source. Either something needs to be dug up in the code itself, or Tesla needs to come out and officially state this.
Assuming its true though, This stinks of trying to game the system. Only 25 launches? Thats nothing over the life of the car. And if its so few 0-60s why even bother? Only thing I can think of is so they can give it to journalists and hit some performance target.
Interesting. So this would seem to imply that the P100D has an upgraded rear drive unit. And so Tesla's liability would be limited the replacement of the original P90D unit with with an upgraded unit, in the event of failure, or potentially in the event of time-out.
In over 2 years of ownership I can count on one hand, the number of times when I've met the above 3 criteria simultaneously.
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25?!?
Ho.
Lee.
Fuk.
Tesla needs to duck and cover. That is outrageous.
Ho.
Lee.
Fuk.
Tesla needs to duck and cover. That is outrageous.
Are you positive on that? I was sure that someone said they weren't using launch mode and still got hit by the limit.
It seems possible that the BMS says 1600 A max but the DU pulls less. For instance, a single motor 85 in the "base" config will only pull 1000 A while the BMS specifies 1200 A max. 1200 A is pulled by a DU in the "sport" config.
The data I've seen shows the advertised pack current dropping, not the max DI current.
I'd love that, but I don't think they would do this as a replacement program. Maybe you mention this problem and beg or complain about this, they may do it on individual basis. I know they are doing extra things to keep people happy/quite.
It's funny to see how Tesla doesn't stop disappointing almost every P owner.
P85D - Wrong HP, 0-60 numbers.
P90D V1 - Wrong quarter mile, lower battery range than advertised.
P90D V2 - After facelift announcement, people bought the new model thinking that they are getting the fastest Tesla, P100D is announced 2 months later. and now, it turns out the cars' performance reduced after a number of launches.
P90D V3 - These are the cars delivered around July-August. Most people paid in full. Tesla sold remaining P90D stock in September with up to %23 discounts.
P100D August - AP2 is released 6 weeks after P100D announcement. Leaving hundreds of first P100D owners angry. Same with P90D inventory, remaining P100d AP1 cars sold with huge discounts.
I don't know you guys, but if I ever buy Tesla again, It won't be a P model. One of the reasons I've paid extra for the P was to support Tesla's mission. But now, I don't believe in the company anymore. Their business practices and car's quality issues are not acceptable.
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@wk057 Since it appears that you have seen some data, can/will you comment on the conditions that increment the counter? (Is launch mode required?
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