Converting Yaris from DBW to DBC? - Toyota Yaris Forums

Nexus1155 · 09-09-2007, 12:53 AM

Does anyone have a clue on how to convert the yaris from the Drive by wire system to Drive by Cable... I know I would need a new throttle body that isn't electronic and a new pedal and whatnot, but i think thats about it. Has anyone else looked more into this subject? Thanks for the input!

eTiMaGo · 09-09-2007, 02:37 AM

well mechanically that's all that would be needed, yeah, but you'll also need to look into the electronic side of things, the ECU will still be looking for the throttle position signal, and will probably go nuts when it can't get it.

The simplest solution, I guess, is to keep the original electric throttle somewhere, still connected, but just not doing anything...

Tapper · 09-09-2007, 10:23 AM

Yeah, a little trickey eh.

Nexus1155 · 09-09-2007, 10:51 AM

yeah, just so the sensor is tricked that it is there, but just not active... I was trying to make a ITB kit for the car, but i keep scratching my head when all the throttle bodies are cable driven...

even the ones Danstoy uses are cable driven so there must be something different here..but I have no clue, it completely stumped me..and im not going to be an ass and ask Danstoy all his secrets hahah, I need to figure out SOME things

Nexus1155 · 09-09-2007, 11:10 AM

What i also found on a Lexus board where they were trying to convert was

Quote:

Hell, if you want to get rid of DBW on the stock TB... just unplug the throttle control motor, open up your accelerator pedal position sensor assembly, rotate a few degrees to give the cable connection full control over the butterfly, and call it a day.

but this conflicts with it

Quote:

I did this with my altezza's TB but what i found was that since my throttle lever and TPS are one unit i had to rotate the TPS sensor as well. With the TPS rotated the bolt holes didnt line up again so that was problem # 1. Problem #2 was that the throttle cable was too long when i did this. With the Altezza the DBW controls idle and is active throughout the complete throttle range. The manual cable only turns the butterfly at about 60% throttle and opens it till about 75% throttle.

eTiMaGo · 09-09-2007, 11:16 AM

Well you could do something real clever and use the DBW's motor to turn a lever that pulls on the ITB throttle cable, that could do the job too without having to change pedals or anything. Of course, you'd still have the characteristics/disadvantages of a DBW throttle.

Nexus1155 · 09-09-2007, 11:22 AM

Yeah, that is true, i don't really care for the Yarii system of DBW its like eh... too jumpy for me, but its my girls car... but hmm...maybe cap off the cable lever on the ITBs and link the wires up ? might work a little more fab than i expected but thats ok..

largeorangefont · 09-09-2007, 12:47 PM

Wait for reflashing ability. Converting it to cable is not worth the hassle.

The DBW gain and pedal travel to TB blade travel are fully adjustable.

Nexus1155 · 09-09-2007, 02:03 PM

I can flash the ECU, how is that going to help me lol...aghhhh im stuckkk

caveatipse · 09-09-2007, 03:02 PM

Could someone explain the difference to me between DBW and DBC? Thanks!

Nexus1155 · 09-09-2007, 03:10 PM

drive by wire is electronic while drive by cable is cable driven... look at an older car, you can grab the cable and tug on it and it will rev the engine...

Black Yaris · 09-10-2007, 07:43 PM

try to PM Teruyume, he did an xB retro fit of a supercharger... pretty sure he swapped his car over to DBC to accomidate the xB throttlebody... just a though

Nexus1155 · 09-10-2007, 08:36 PM

thanks for the info! will do

largeorangefont · 09-10-2007, 11:38 PM

Quote:

Originally Posted by Nexus1155

I can flash the ECU, how is that going to help me lol...aghhhh im stuckkk

You can adjust the DBW response in the factory ECU

Masteraal · 09-11-2007, 03:33 AM

how? i just got my car the other day and it shits me how the first 5mm on the pedal doesnt actually do anything.but i guess ill just get used to it

Nexus1155 · 09-11-2007, 12:14 PM

you need to be able to reflash the ECU, and thanks for the idea, I just didn't think the TPS on the pedal kicked in in those first 5mm, but if its adjustable from the ecu that would be alot easier, and I figured out a way to wire another throttle body and tap into the existing tps and just trick the ecu...

rx100 · 09-13-2007, 05:32 AM

maybe this will help..
http://www.autops.co.uk/html/sprint_booster.html

Nexus1155 · 09-13-2007, 01:04 PM

it just looks like it would be a few resistors in there... like they just upped the gain is all, I'll take a look around see if i can find a DIY, do it and post up pics....

09-09-2007, 12:53 AM	#1
Nexus1155 Bathroom + Laptop = <3 Drives: Audi Join Date: Aug 2006 Location: Dorchester Posts: 1,009	Converting Yaris from DBW to DBC? Does anyone have a clue on how to convert the yaris from the Drive by wire system to Drive by Cable... I know I would need a new throttle body that isn't electronic and a new pedal and whatnot, but i think thats about it. Has anyone else looked more into this subject? Thanks for the input!

09-09-2007, 11:16 AM	#6
eTiMaGo vroom vroom View User's Garage Drives: lil red 5-door Join Date: Sep 2006 Location: Bangkok, Thailand Posts: 7,744	Well you could do something real clever and use the DBW's motor to turn a lever that pulls on the ITB throttle cable, that could do the job too without having to change pedals or anything. Of course, you'd still have the characteristics/disadvantages of a DBW throttle. __________________ The price of freedom of religion, or of speech, or of the press, is that we must put up with a good deal of rubbish. - Robert Jackson Bye bye 1NZ...

09-10-2007, 07:43 PM	#12
Black Yaris der Zeck View User's Garage Drives: '05 Audi A4 1.8t quattro Join Date: Sep 2006 Location: Toledo, OH Posts: 5,231	try to PM Teruyume, he did an xB retro fit of a supercharger... pretty sure he swapped his car over to DBC to accomidate the xB throttlebody... just a though __________________

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09-09-2007, 02:37 AM	#2
eTiMaGo vroom vroom View User's Garage Drives: lil red 5-door Join Date: Sep 2006 Location: Bangkok, Thailand Posts: 7,744	well mechanically that's all that would be needed, yeah, but you'll also need to look into the electronic side of things, the ECU will still be looking for the throttle position signal, and will probably go nuts when it can't get it. The simplest solution, I guess, is to keep the original electric throttle somewhere, still connected, but just not doing anything... __________________ The price of freedom of religion, or of speech, or of the press, is that we must put up with a good deal of rubbish. - Robert Jackson Bye bye 1NZ...

09-09-2007, 10:23 AM	#3
Tapper Drives: 2008 Black RS 2dr Join Date: Aug 2007 Location: Kingston. Ontario, Canada Posts: 39	Yeah, a little trickey eh.

09-09-2007, 10:51 AM	#4
Nexus1155 Bathroom + Laptop = <3 Drives: Audi Join Date: Aug 2006 Location: Dorchester Posts: 1,009	yeah, just so the sensor is tricked that it is there, but just not active... I was trying to make a ITB kit for the car, but i keep scratching my head when all the throttle bodies are cable driven... even the ones Danstoy uses are cable driven so there must be something different here..but I have no clue, it completely stumped me..and im not going to be an ass and ask Danstoy all his secrets hahah, I need to figure out SOME things

09-09-2007, 11:22 AM	#7
Nexus1155 Bathroom + Laptop = <3 Drives: Audi Join Date: Aug 2006 Location: Dorchester Posts: 1,009	Yeah, that is true, i don't really care for the Yarii system of DBW its like eh... too jumpy for me, but its my girls car... but hmm...maybe cap off the cable lever on the ITBs and link the wires up ? might work a little more fab than i expected but thats ok..

09-09-2007, 12:47 PM	#8
largeorangefont Break'em off some. View User's Garage Drives: 07 Yaris LB, 04 Cobra Join Date: Jan 2007 Location: So Cal, OC Posts: 854	Wait for reflashing ability. Converting it to cable is not worth the hassle. The DBW gain and pedal travel to TB blade travel are fully adjustable.

09-09-2007, 02:03 PM	#9
Nexus1155 Bathroom + Laptop = <3 Drives: Audi Join Date: Aug 2006 Location: Dorchester Posts: 1,009	I can flash the ECU, how is that going to help me lol...aghhhh im stuckkk

09-09-2007, 03:02 PM	#10
caveatipse Banned Drives: 2007 Black Yaris Join Date: Aug 2007 Location: Louisiana Posts: 119	Could someone explain the difference to me between DBW and DBC? Thanks!

09-09-2007, 03:10 PM	#11
Nexus1155 Bathroom + Laptop = <3 Drives: Audi Join Date: Aug 2006 Location: Dorchester Posts: 1,009	drive by wire is electronic while drive by cable is cable driven... look at an older car, you can grab the cable and tug on it and it will rev the engine...

09-10-2007, 08:36 PM	#13
Nexus1155 Bathroom + Laptop = <3 Drives: Audi Join Date: Aug 2006 Location: Dorchester Posts: 1,009	thanks for the info! will do

09-11-2007, 03:33 AM	#15
Masteraal View User's Garage Drives: Black Yaris YRS 3dr Manual Join Date: Aug 2007 Location: Sydney Australia Posts: 191	how? i just got my car the other day and it shits me how the first 5mm on the pedal doesnt actually do anything.but i guess ill just get used to it

09-11-2007, 12:14 PM	#16
Nexus1155 Bathroom + Laptop = <3 Drives: Audi Join Date: Aug 2006 Location: Dorchester Posts: 1,009	you need to be able to reflash the ECU, and thanks for the idea, I just didn't think the TPS on the pedal kicked in in those first 5mm, but if its adjustable from the ecu that would be alot easier, and I figured out a way to wire another throttle body and tap into the existing tps and just trick the ecu...

09-13-2007, 05:32 AM	#17
rx100 Drives: yaris hatch Join Date: Aug 2007 Location: singapore Posts: 21	maybe this will help.. http://www.autops.co.uk/html/sprint_booster.html

09-13-2007, 01:04 PM	#18
Nexus1155 Bathroom + Laptop = <3 Drives: Audi Join Date: Aug 2006 Location: Dorchester Posts: 1,009	it just looks like it would be a few resistors in there... like they just upped the gain is all, I'll take a look around see if i can find a DIY, do it and post up pics....