Drive By Wire
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Cargo Master
Joined: Nov 2011
Posts: 2,946
Likes: 11
From: Northern California
Drive By Wire
Ok so I did some looking into the drive by wire system and came across this explanation of it.
Drive by wire, or more correctly throttle by wire, is an ECU controlled opening of the throttle butterfly based on potentiometer inputs. There is a potentiometer that sends accelerator pedal position to the ECU. Based on that information the ECU then opens the butterfly of the throttle. A potentiometer at the throttle body then sends flap position back to the ECU. The 2 potentiometer inputs into the ECU are compared by the ECU. Basically, the gas pedal sends a signal to the ECU saying, "I'm pressed this far down." The ECU then opens the throttle "this far" in response. The throttle then says back to the ECU, "I'm opened this far."
If this is correct is there a way to tweak the response to help eliminate any lag?? (Especially on the ecoboost)
Drive by wire, or more correctly throttle by wire, is an ECU controlled opening of the throttle butterfly based on potentiometer inputs. There is a potentiometer that sends accelerator pedal position to the ECU. Based on that information the ECU then opens the butterfly of the throttle. A potentiometer at the throttle body then sends flap position back to the ECU. The 2 potentiometer inputs into the ECU are compared by the ECU. Basically, the gas pedal sends a signal to the ECU saying, "I'm pressed this far down." The ECU then opens the throttle "this far" in response. The throttle then says back to the ECU, "I'm opened this far."
If this is correct is there a way to tweak the response to help eliminate any lag?? (Especially on the ecoboost)
Posting Guru
Joined: Sep 2006
Posts: 1,392
Likes: 1
From: Dayton, TX
Ok so I did some looking into the drive by wire system and came across this explanation of it.
Drive by wire, or more correctly throttle by wire, is an ECU controlled opening of the throttle butterfly based on potentiometer inputs. There is a potentiometer that sends accelerator pedal position to the ECU. Based on that information the ECU then opens the butterfly of the throttle. A potentiometer at the throttle body then sends flap position back to the ECU. The 2 potentiometer inputs into the ECU are compared by the ECU. Basically, the gas pedal sends a signal to the ECU saying, "I'm pressed this far down." The ECU then opens the throttle "this far" in response. The throttle then says back to the ECU, "I'm opened this far."
If this is correct is there a way to tweak the response to help eliminate any lag?? (Especially on the ecoboost)
Drive by wire, or more correctly throttle by wire, is an ECU controlled opening of the throttle butterfly based on potentiometer inputs. There is a potentiometer that sends accelerator pedal position to the ECU. Based on that information the ECU then opens the butterfly of the throttle. A potentiometer at the throttle body then sends flap position back to the ECU. The 2 potentiometer inputs into the ECU are compared by the ECU. Basically, the gas pedal sends a signal to the ECU saying, "I'm pressed this far down." The ECU then opens the throttle "this far" in response. The throttle then says back to the ECU, "I'm opened this far."
If this is correct is there a way to tweak the response to help eliminate any lag?? (Especially on the ecoboost)
More Turbo
Joined: Nov 2011
Posts: 611
Likes: 3
From: Estevan, Saskatchewan
dont think there is really any way to tweak it other then a tuner. really you pushing on the gas pedal sends a signal to the computer and then it decides to open it that far or not. another key part of the traction control is that it cuts off throttle sometimes. (sis and her bf found out the hard way in their brand new jeep + mud lol)
Postmaster
Joined: Jul 2008
Posts: 2,565
Likes: 2
That traction control needs to be permanently shut off. It's not needed on a 4wd truck and seems to cause more problems than it solves. These electronic nannies are the main reason I'm going to keep my 06 as long as I can.
Cargo Master
Joined: Oct 2010
Posts: 2,762
Likes: 536
From: barton city mi
On the little truck, I leave it active, I haven't had it where it would screw me yet, but that shutoff button is always on my mind.
Guest
Joined: Nov 2004
Posts: 7,988
Likes: 55
From: north west new jersey
i doubt you would feel any difference between a tbw and a cable operated system. even with a tuner the computer has to sence where the pedal is first, then send the signal to the tb, as to real world this tbw is out on every brand and model for a long time,it is pretty much rock solid,any delay one dose feel with a turbo'd car or truck is in turbo lag and even that is almost not there by the use of smaller vaned higher pressure turbo's that spin up way faster then in the old days of bigger vaned ones like ford used in 1978 on the turbo mustang
Posting Guru
Joined: May 2006
Posts: 2,486
Likes: 0
From: Iowa
Ford puts a delay in there throttles of there Drive by wire vehicles. The eboost should have almost no turbo lag because it uses 2 small turbos.
I know that i have read that when you get your newer trucks tuned it will eliminate the delay in the pedal from when you stand on it.
I know that i have read that when you get your newer trucks tuned it will eliminate the delay in the pedal from when you stand on it.
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Cargo Master
Joined: Sep 2005
Posts: 2,976
Likes: 911
From: Montana
I noticed the delay when I first got my truck, then I think my driving style either adapted, or the computer learned it and mitigated some of the delay. I still feel the delay sometimes, but it does not seem as apparent, at least until I drive my wife's 2000 f-150 or my Mustang. The throttle response on both of them is noticeably quicker.
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Cargo Master
Joined: Nov 2011
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From: Northern California
I noticed the delay when I first got my truck, then I think my driving style either adapted, or the computer learned it and mitigated some of the delay. I still feel the delay sometimes, but it does not seem as apparent, at least until I drive my wife's 2000 f-150 or my Mustang. The throttle response on both of them is noticeably quicker.
When I test drove the new trucks I did feel somewhat of a delay or lag. Don't the ecoboosts come with a waste gate? Like you guys have said maybe it would just have to adapt to the driver for awhile. I be driving it like a sport car or anything...but of course will have the occasional quick starts...lol
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