View Poll Results: 23mpg As Is Or 21mpg With INSTANT Throttle Response...Is The Trade Worth It?
YES!!!!!!!!!!
15
60.00%
No, it would be nice, but not at 2mpg less efficiency
3
12.00%
I have no idea what you people are talking about, my car is perfect
7
28.00%
Voters: 25. You may not vote on this poll
Would You Accept 2 MPG less efficiency To Get A Tranny That Responded IMMEDIATELY?
02-02-07, 11:12 AM
#1
Lead Lap
Thread Starter
Join Date: Jun 2006
Location: New York
Posts: 412
Likes: 0
Received 0 Likes
on
0 Posts
Would You Accept 2 MPG less efficiency To Get A Tranny That Responded IMMEDIATELY?
OK, this is a pretty straightforward question. Many have suggested that the dreadful "disconnect" between engine and tranny is a conscious design decision engineered to produce better gas mileage.
If this is so then it should be pretty easy to design an "override button" that restores complete and instant communication between engine and tranny. The price would be the loss of a couple of mpg of efficiency.
Assuming that your overall mpg would drop from let's say 23mpg (my overall average) to 21 mpg, would you find this an acceptable price to pay to have instant throttle response?
If this is so then it should be pretty easy to design an "override button" that restores complete and instant communication between engine and tranny. The price would be the loss of a couple of mpg of efficiency.
Assuming that your overall mpg would drop from let's say 23mpg (my overall average) to 21 mpg, would you find this an acceptable price to pay to have instant throttle response?
Last edited by PsychDoc; 02-02-07 at 11:16 AM.
02-02-07, 12:36 PM
#2
Lexus Fanatic
So you'd be paying an extra $3.50 penalty per tank of gas.
filling up once per week, 52x 3.5 = $182 per year penalty.
choices choices....
Drive like a granny....... or pay $182......
hmmmmm
filling up once per week, 52x 3.5 = $182 per year penalty.
choices choices....
Drive like a granny....... or pay $182......
hmmmmm
02-02-07, 05:07 PM
#3
Lead Lap
Join Date: Jul 2006
Location: CA
Posts: 733
Likes: 0
Received 0 Likes
on
0 Posts
i cant imagine the choice to be so simple, as there is more to it than gas efficiency. The overall design is involved, so the quick response would require the sacrifice of other amenities, perhaps smoothness and cushiness of the ride. IMHO.
02-02-07, 07:15 PM
#5
Lead Lap
Thread Starter
Join Date: Jun 2006
Location: New York
Posts: 412
Likes: 0
Received 0 Likes
on
0 Posts
Not necessarily so mon ami!
Lexus brass reads this forum regularly (as I'm sure you are aware) and one would hope that they both recognize and respect the desires of their buying public.
Lexus brass reads this forum regularly (as I'm sure you are aware) and one would hope that they both recognize and respect the desires of their buying public.
Last edited by PsychDoc; 02-03-07 at 07:53 AM.
02-03-07, 07:34 AM
#6
Driver School Candidate
Join Date: Apr 2006
Location: PA
Posts: 27
Likes: 0
Received 0 Likes
on
0 Posts
"Toyota has made its surge on producing the most fuel efficient cars in class…and a software reflash would most likely reduce EPA mileage estimate on the Avalon, Camry and ES350 by 4mpg."
Above quote taken from site listed below:
http://www.fourwheeldrift.wordpress....ting-problems/
Above quote taken from site listed below:
http://www.fourwheeldrift.wordpress....ting-problems/
02-03-07, 09:39 AM
#7
Lexus Champion
"Toyota has made its surge on producing the most fuel efficient cars in class…and a software reflash would most likely reduce EPA mileage estimate on the Avalon, Camry and ES350 by 4mpg."
Above quote taken from site listed below:
http://www.fourwheeldrift.wordpress....ting-problems/
Above quote taken from site listed below:
http://www.fourwheeldrift.wordpress....ting-problems/
Trending Topics
02-03-07, 05:59 PM
#9
Lexus Fanatic
When you have a situation, on the ES and some of the older IS300 models where, at acceleration from a rolling low-speed situation, the engine RPM's run away for several seconds while the car itself does not keep up, that is NOT saving gas. On the contrary, that is USING unnecessary gas because the engine is turning unnecessary RPM's ( at a rich air-fuel mixture for acceleration) while the car itself is not responding much.If the transmission responded immediately, the car would use LESS gas, not more.
02-03-07, 07:30 PM
#10
Lead Lap
Thread Starter
Join Date: Jun 2006
Location: New York
Posts: 412
Likes: 0
Received 0 Likes
on
0 Posts
First of all, I don't agree with your premise here. How does an inefficient transmission response SAVE fuel? When you have a situation, on the ES and some of the older IS300 models where, at acceleration from a rolling low-speed situation, the engine RPM's run away for several seconds while the car itself does not keep up, that is NOT saving gas. On the contrary, that is USING unnecessary gas because the engine is turning unnecessary RPM's ( at a rich air-fuel mixture for acceleration) while the car itself is not responding much.
If the transmission responded immediately, the car would use LESS gas, not more.
When you have a situation, on the ES and some of the older IS300 models where, at acceleration from a rolling low-speed situation, the engine RPM's run away for several seconds while the car itself does not keep up, that is NOT saving gas. On the contrary, that is USING unnecessary gas because the engine is turning unnecessary RPM's ( at a rich air-fuel mixture for acceleration) while the car itself is not responding much.If the transmission responded immediately, the car would use LESS gas, not more.
What kind of place do you think this is anyway?
Last edited by PsychDoc; 02-04-07 at 06:01 AM.
02-04-07, 06:23 AM
#11
Lexus Champion
You do not have to lose mpg in order to not have hesitation, other manufacturers somehow pull off providing vehicles without the hesitation and still get good fuel economy. This is software related and is correctable.
02-04-07, 07:56 PM
#12
I would love to take this opportunity to interject, "If you're willing to pay a price for better transmissin performance, stop *****ing & drop the valve body. Then send it to a transmission shop for a valve body mod. Most popular/trusted on the Toyota transmissions in general, and the ONLY trusted scource of hi-po FWD Toyota transmissions. Is IPT".
And if all you want is control over transmission shifting. All you have to do is ground the ECU outputs for the different control solenoids through relays, or switches with a 10w resistor to ground & then run the shift solenoids yourself via whatever means you want.
A $4 switch from radioshack if you want...
Work on getting the valve body pressure up during shifting... The pressure control solenoid. Trace the signal at your varrying throttle positions to find out how the computer opens the valve more to allow more pressure. Then do the same thing there.
Ground the ECU output to a 10w resistor & control it yourself.
And if all you want is control over transmission shifting. All you have to do is ground the ECU outputs for the different control solenoids through relays, or switches with a 10w resistor to ground & then run the shift solenoids yourself via whatever means you want.
A $4 switch from radioshack if you want...
Work on getting the valve body pressure up during shifting... The pressure control solenoid. Trace the signal at your varrying throttle positions to find out how the computer opens the valve more to allow more pressure. Then do the same thing there.
Ground the ECU output to a 10w resistor & control it yourself.
02-04-07, 10:12 PM
#13
Lexus Champion
I would love to take this opportunity to interject, "If you're willing to pay a price for better transmissin performance, stop *****ing & drop the valve body. Then send it to a transmission shop for a valve body mod. Most popular/trusted on the Toyota transmissions in general, and the ONLY trusted scource of hi-po FWD Toyota transmissions. Is IPT".
And if all you want is control over transmission shifting. All you have to do is ground the ECU outputs for the different control solenoids through relays, or switches with a 10w resistor to ground & then run the shift solenoids yourself via whatever means you want.
A $4 switch from radioshack if you want...
Work on getting the valve body pressure up during shifting... The pressure control solenoid. Trace the signal at your varrying throttle positions to find out how the computer opens the valve more to allow more pressure. Then do the same thing there.
Ground the ECU output to a 10w resistor & control it yourself.
And if all you want is control over transmission shifting. All you have to do is ground the ECU outputs for the different control solenoids through relays, or switches with a 10w resistor to ground & then run the shift solenoids yourself via whatever means you want.
A $4 switch from radioshack if you want...
Work on getting the valve body pressure up during shifting... The pressure control solenoid. Trace the signal at your varrying throttle positions to find out how the computer opens the valve more to allow more pressure. Then do the same thing there.
Ground the ECU output to a 10w resistor & control it yourself.
02-05-07, 06:16 AM
#14
Lexus Champion
02-05-07, 03:16 PM
#15
How's a dealer going to spot a spring in a valvebody? LoL!
And why is it rediculous? Tons of other cars have it done when new.
Nothing is stopping anybody from doing it. It's not an expencive proceedure. Infact, on most automatic transmissions. The valve body itself is one of the best price to accelleration deals going.
And why is it rediculous? Tons of other cars have it done when new.
Nothing is stopping anybody from doing it. It's not an expencive proceedure. Infact, on most automatic transmissions. The valve body itself is one of the best price to accelleration deals going.