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Thread: Drive By Wire ITB

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    Pit Crew Decade Plus User MK1_Oz's Avatar

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    Drive By Wire ITB

    Has anybody fitted drive by wire to independent throttle bodies? Doesn't seem to be any of the shelf solutions on the market. I have read that BMW M3/5 DBW throttle body motors have been modified but not seen much else. Thinking about ECU controlled throttle blips on sequential gearbox downshift. Other option is a throttle blip solinoid (prob hse to be pneumatic).
    1970 Mk1 Escort Tarmac Rally Car

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    Re: Drive By Wire ITB

    I have it on my car
    Jenvey itb
    And a jenvey fbw motor
    Running through a f88 ecu
    With a Geartronic gear knob
    For flat shift and auto blip down

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    Re: Drive By Wire ITB

    Quote Originally Posted by Lacey View Post
    I have it on my car
    Jenvey itb
    And a jenvey fbw motor
    Running through a f88 ecu
    With a Geartronic gear knob
    For flat shift and auto blip down
    What pedal did you use?

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    Re: Drive By Wire ITB

    Pedal largely irrelevant, pick whatever fits your fitment the easiest. Pretty much any aftermarket ecu should be able to work with any pedal

    I used a Subaru pedal on mine. Base sits on a flat vertical, ie the bulkhead with a small adapter I made, and I did have to bend/alter the metal pedal itself to suit what I wanted. A lot will have plastic pedals that would be hard to modify.
    Subaru was pretty easy in that regard. Although I think I welded on and used an Audi actual pedal part your foot touches as it looked better match to my existing pedals.
    Just search ebay for images of pedals that might work for you.

    I believe some of the BMW M cars have with ITB DBW already ? Whether it's easy to adapt something like that, or to pick up a single DBW motor/blade, and butcher that up to drive your existing ITB's, would be up to you.

    But I've seen people literally cut open the body of a DBW unit to gain access to the shaft itself, then use the shaft via a lever to actuate a different throttle setup.

    So if you were really stuck, you could likely cut up a DBW unit and hook up the shaft to your external linkage or shaft to work

    Before.


    After


    Last edited by stevieturbo; 24-05-2023 at 21:41.
    9.85 @ 145mph 202mph standing mile

    https://www.youtube.com/watch?v=Ss_c7fML3rw

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    Last edited by stevieturbo; 24-05-2023 at 21:48.
    9.85 @ 145mph 202mph standing mile

    https://www.youtube.com/watch?v=Ss_c7fML3rw

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    Bodger

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    Re: Drive By Wire ITB

    Nissan z350
    In a Sierra the mounting only requires a small mod

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    Re: Drive By Wire ITB

    Thanks!

    I'm using an actuator from an e46, I've got it mounted provisionally, just need to finalise that bracket and the lever ratio, but that's no problem.

    Was going to just put a TPS on the original pedal, but I see they use two for safety, I suppose if one locks fully open and fails you'll be full speed ahead! So figured I'll use an actual pedal with two TPS fitted properly.

    Looked at loads on eBay, without offering them up, it's hard to tell, but I've been surfing. Someone who's actually fitted one is worth talking too.

    I also work offshore, so not home too often with the time to try different pedals. Which is why I've asked the question!

    Much appreciated for the help.

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    Re: Drive By Wire ITB

    Bracket is just a mock up, it's not staying like that. I can pickup the bolt on the engine mount too and the inlet above.

    Last edited by Simjim; 25-05-2023 at 12:40.

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    Re: Drive By Wire ITB

    Steve what car is yours? Mine is a mk2 Escort.

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    Re: Drive By Wire ITB

    OK, here's the pic after the above failed. You need to get them small for this forum!

    Thats not the final bracket - just where its going.

    Click image for larger version Name:	IMG20230514201750.jpg Views:	32 Size:	138.1 KB ID:	88494

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    Re: Drive By Wire ITB

    Quote Originally Posted by Simjim View Post
    Steve what car is yours? Mine is a mk2 Escort.

    MK2 Granada

    both pedal and blade position will have 2 tracks, this is for safety reasons. Some ecu's might allow you to operate with only one each, but it is not a good idea.

    The two tracks and pedal/blade relationship all need to be within defined parameters for it to all work and be happy. Choosing to ignore these safeties....can be done, but not sensible.

    it's not a case of one locking open....both will always be fixed to the shaft anyway. So if the shaft locks open, it locks open. But as long as feedback from both sensors are all good....then the sensors are working fine.
    But if say a single track started to read say fully open....due to a broken track or something, that could be bad. Hence there is safety built in with two tracks in each

    Let's face it, the chances are slim, but when it's easy to get and use all OEM parts with the necessary sensors built in, there seems no reason to try and bodge something else.
    Last edited by stevieturbo; 25-05-2023 at 18:17.
    9.85 @ 145mph 202mph standing mile

    https://www.youtube.com/watch?v=Ss_c7fML3rw

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    Re: Drive By Wire ITB

    Yes, i already said that, which is why I'm getting the proper pedal. I said, I realised if I use one and it locks open, it could end badly.

    Granada should be similar, im getting the legacy pedal, they're pretty cheap too which is a bonus.
    Last edited by Simjim; 25-05-2023 at 21:45.

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    Re: Drive By Wire ITB

    Quote Originally Posted by Simjim View Post
    Yes, i already said that, which is why I'm getting the proper pedal. I said, I realised if I use one and it locks open, it could end badly.

    Granada should be similar, im getting the legacy pedal, they're pretty cheap too which is a bonus.
    Try and get the wiring and connector with it. Just makes life easier. Can't remember if mine was an Impreza or Legacy pedal....pretty sure Impreza, they were just more plentiful online.

    I just added the flat aluminium plate to the bulkhead using the pedals original bolt holes, and them bolted the new pedal to the adapter. Pretty easy really.

    But the steel rod/arm on the pedal itself, i had to remove it and re-shape/weld to suit
    9.85 @ 145mph 202mph standing mile

    https://www.youtube.com/watch?v=Ss_c7fML3rw

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