IS - 2nd Gen (2006-2013) Discussion about the 2006+ model IS models

ECT PWR button

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Old 09-14-09, 03:54 PM
  #91  
Kurtz
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Originally Posted by Looftie
Old thread, I know but has anyone run their car down the track in the different modes?

Seat of the pants is one thing, but I am curious how the ETs and trap speeds change from one ECT mode to the other.
Normal is the fastest

ECT-Power can make the car feel faster in part throttle driving, but if you're just gonna floor it normal's better.
Old 09-14-09, 03:57 PM
  #92  
mikez
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Originally Posted by IS-SV
Flashbacks, but the button is still there and rarely used.
Most useless buttons on my car ever, the only button that gets used less in my car is the trunk release button from within the trunk itself.

In my 3 years of ownership I've touched that ECT PWR 2x.
Old 09-14-09, 04:22 PM
  #93  
RFFG
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Originally Posted by is350drive
Does the ECT/Power button makes the shifting with the paddle shifters faster??
good question
Old 09-14-09, 04:59 PM
  #94  
gc86
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^ no it does not
Old 09-14-09, 05:01 PM
  #95  
IS-SV
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Originally Posted by mikez
Most useless buttons on my car ever, the only button that gets used less in my car is the trunk release button from within the trunk itself.

In my 3 years of ownership I've touched that ECT PWR 2x.
At least I use the trunk button about once a week.
Old 12-31-10, 03:39 PM
  #96  
jaxxx
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it holds a gear longer and downshifts quicker
Old 01-01-11, 12:33 PM
  #97  
Kurtz
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Originally Posted by jaxxx
it holds a gear longer
Depends what you mean by that.

ECT-Power actually shifts at a lower rpm than normal mode if floored, which is why normal mode produces better 0-60 and 1/4 mile times.
Old 01-01-11, 02:30 PM
  #98  
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really
?? what rpm?
Old 01-01-11, 05:14 PM
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Originally Posted by jaxxx
really
?? what rpm?
https://www.clublexus.com/forums/3042656-post38.html

Originally Posted by Gernby
the mode that shifts at the highest RPM is Normal! Peak RPM in Snow mode is 6260. For Normal mode it shifts as high as 6625, and PWR mode it shift as high as 6510. It also seems to shift at a lower RPM in 1st gear than in 2nd gear for all 3 modes.
Old 01-02-11, 08:15 AM
  #100  
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interesting
Old 03-09-11, 01:33 PM
  #101  
DreamerzCC
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Originally Posted by pwndzzled
For part of your experiment, you should put it in "SNOW" mode, and see if you get enhanced mileage. I think it does... forces you not to drive aggressively. hehe
I may be wrong but "Snow Mode" will start in a higher gear correct?
Old 03-09-11, 01:35 PM
  #102  
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Originally Posted by jaxxx
it holds a gear longer and downshifts quicker
When I drive i hold the gear longer......ECT PWR in auto doesn't. In S-Mode I shift right before redline.
Old 03-09-11, 06:07 PM
  #103  
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Originally Posted by DreamerzCC
When I drive i hold the gear longer......ECT PWR in auto doesn't. In S-Mode I shift right before redline.
In S mode you don't shift at all, because your car has an automatic transmission.

When trying to pretend you're shifting in S mode, which is all you can do, one of three things can happen:

1) You paddle up too late, and the car bounces off the rev limiter. This won't hurt anything, but your shift will suck.

2) You paddle up too soon, in which case, assuming the car is floored (which I assume since you're discussing redline) the car will still automatically shift to the next gear at the maximum correct RPM. Just like if you had left it in D the whole time.

3) You paddle up "exactly" in time for your fully automatic transmission to correctly shift up to the next gear exactly when it would have if you'd left it in D.


Notice how in none of those cases using "S" helped at all, and in one made things worse? (and in the two non-worse cases you'll always shift at a higher max RPM in ECT-Normal than in ECT-Power)



Your car is an automatic. The paddles aren't shifters, they are simply top gear limiters. They are not useful for making the car any faster. The only things they can do in a drag race are slow you down, or if you're very very lucky they can perform just as well as leaving it in D would have done. The car remains 100% completely automatic at all times, within the allowed range of gears.

If you want a car that can actually "hold" a gear without ever downshifting or upshifting you need to trade up to an IS-F.
Old 03-09-11, 06:28 PM
  #104  
llamaboiz
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Kurtz you're 1, 2, 3 points there can be said for just about any car manual or auto that allows you to shift, you'll either bounce/too soon or just right
Old 03-09-11, 06:40 PM
  #105  
Kurtz
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Originally Posted by llamaboiz
Kurtz you're 1, 2, 3 points there can be said for just about any car manual or auto that allows you to shift, you'll either bounce/too soon or just right
Naah... in an IS-F for example you can, in theory, ACTUALLY shift the car, manually, at a higher rpm than the ECU will ever shift it, but still not bounce the rev limiter... that is perfect in that case, and possible. You can do "better" than the ECU can if you do it perfectly.


In an ISx50 however the best you can ever do with the paddles-that-aren't-shifters is exactly as well as just leaving it in D can do. Meaning even "perfect" isn't any better than if you'd left it alone... and if you do manage "perfect" all you did, literally, was manage to get out of the way of the ECU doing the same thing it would've done if you had left it in D. Because the paddles aren't shifters.


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