drive by wire?

[PXLpainter]

^^^ ROFLOL!!!

Damn fuggin' straight man!!!

[crispone]

Part of what everyone is describing as lag has nothing to do with the DBW system. Actually- it has nothing to do with any limitations of that system. Engineers have purposely programmed that lag into the ecm so that it is easier to smoothly take off from a stop. They tell the actuator on the throttle body to delay and "soften" the opening of the blade. I know it sounds dumb, but that is really why it operates the way it does. It's intentional. Again, remember what was discussed as far as the "target audience" of these cars- regular old Camry drivers.

There is no reason the actual design of the rheostat/ actuator motor would prevent instant throttle blade action. RC cars using radio transmitters and servos operate the same basic way and allow near instantaneous response.

My father has a SAAB 9-5 which also has the drive by wire setup. It seems a little more responsive than my gen2, but if you switch to "sport" mode, it is CRAZY responsive. In fact, if you slyly reach over and change to sport mode while someone else is driving, the next time they take off from a stoplight they will jerk the car as if they stabbed the throttle!

This, like the transmission programming, is all meant to make for a more smooth and docile driving experience. I know it's hard to accept given the super sporty look of our laras

I agree strongly with your explanation. Similar to my first hand experience with modern motorcycle throttle bodies, and CV (Constant Velocity) slide carbs -vs- flat-slide push-pull direct actuated mikuni's, and such...

Your DIRECT input at the PEDAL is being MITIGATED by a COMPUTER that is considering various sensory inputs, and fulfilling a DESIGNATED BEHAVIOR based on an objective criteria for performance outcome... and fellow SG'ers... that performance outcome WARN'T NO HOT-ROD!


But I digress... to Jeff's point, there WOULD be recourse to otherwise manipulate the units and achieve a different outcome. I agree with this, as well...


WHO WRITES "TRANNY CODE" IN HERE???


A CRISP, HARD SHIFTING tranny when "pressed", would be an epiphany of performance from these otherwise mild creatures...


Let us collectively meditate on this thought for a moment...



-crisp
GUINNESS!

[gnegroni]

Probably the same guy who writes the code for the complex hard-to-tinker-with Toyota ECUs. Gosh, couldn't we just have TOYDATA?

[woa_its_j3ff]

^ wouldnt that be nice. those Honduh guys have it lucky..

[youngblood]

If you believe what "shift-kit" manufacturers say, a firmer shifting transmission is supposed to be more long-lived, too. They cite the reduction in slippage and, thus, a reduction in heat generated from said slippage.
We NEED firmer shifting laras!

[Sebas007]

guys...auto tranny are drive by oil that make it slips longer than a mechanical join as a manual tranny. The Valve body need to be upgrade and the stall converter too to be less smooth and more aggressive.

Searh IPT tranmission on google to find everything you wannan know. for less than 1000$ you will have a stiffer shift and it will reduce the tranny lag by very much.

About the main subject, drive by wire...I guess it is not a bad system at all but cannot be fast to react as a mechanical link for sure because there is a part of thinking indeed.

[PXLpainter]

guys...auto tranny are drive by oil that make it slips longer than a mechanical join as a manual tranny. The Valve body need to be upgrade and the stall converter too to be less smooth and more aggressive.

Searh IPT tranmission on google to find everything you wannan know. for less than 1000$ you will have a stiffer shift and it will reduce the tranny lag by very much.

About the main subject, drive by wire...I guess it is not a bad system at all but cannot be fast to react as a mechanical link for sure because there is a part of thinking indeed.

Hey Sebas - you got the link to that manufacturer that had the parts for that? I can't seem to find it now...

Also - have you given any more thought about having that done to your ride?

[Sebas007]

Here's the link
http://www.ipttrans.com/toyotaauto.shtml

Product Desc

The fact is that there is no shift kit available for most Toyota transmissions! We are able to modify your existing valve body for high performance operation. These are the same modifications that are included in our line of performance transmissions. Experience the change from mild to wild! Please note that this is a modification service- you must ship your valve body to: IPT 1105 Route 23 South Wayne, NJ 07470 Normal turnaround time is 24-48 hours at our shop.

Price: $575

Go down in Valve Bodies section and you'll the Toyota "Universal" VB kits for our U151E tranny for 575$. The things is you need to send them your stock VB and re-install it when you receive it back. I suggest to maybe upgrade de torque converter too and add an tranny oil cooler.

VB (575) + Torque Converter (500)+ Tranny Cooler (100)= around 1200$
The complete rebuilt of the tranny is $3375. Tony the Tiger did it by them and he runs over 420 whp in his Camry !
http://www.importperformancetrans.com/forums/viewtopic.php?f=2&t=677

I found IPT while I was searching for my project...now postponed !
http://www.solaraguy.com/viewtopic.php?t=39200

guys...auto tranny are drive by oil that make it slips longer than a mechanical join as a manual tranny. The Valve body need to be upgrade and the stall converter too to be less smooth and more aggressive.

Searh IPT tranmission on google to find everything you wannan know. for less than 1000$ you will have a stiffer shift and it will reduce the tranny lag by very much.

About the main subject, drive by wire...I guess it is not a bad system at all but cannot be fast to react as a mechanical link for sure because there is a part of thinking indeed.

Hey Sebas - you got the link to that manufacturer that had the parts for that? I can't seem to find it now...

Also - have you given any more thought about having that done to your ride?

[kingkakyle]

guys...auto tranny are drive by oil that make it slips longer than a mechanical join as a manual tranny. The Valve body need to be upgrade and the stall converter too to be less smooth and more aggressive.

Searh IPT tranmission on google to find everything you wannan know. for less than 1000$ you will have a stiffer shift and it will reduce the tranny lag by very much.

About the main subject, drive by wire...I guess it is not a bad system at all but cannot be fast to react as a mechanical link for sure because there is a part of thinking indeed.

but the thinking process could be made almost as fast as the actual mechanical one? bimmers use a dbw also i think and they dont seem to have lag....
but of course a direct mechanical connection will always be faster (unless the car can predict what you are going to do....scary)

[Sebas007]

but of course a direct mechanical connection will always be faster (unless the car can predict what you are going to do....scary)

HAHA right on !!