Using old VW ECUs for Drive By Wire control

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drewhastheinternet
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Joined: Sat Jun 25, 2016 8:28 pm

Using old VW ECUs for Drive By Wire control

Post by drewhastheinternet » Sat Jul 30, 2016 6:22 pm

Hey I wanted to show you guys what I figured out the other day. I wondered If a mk4 vw ecu would work like a DBW controller if I only wired it to the pedal and throttle body. Well It worked:
https://www.youtube.com/watch?v=8fCR7CZQZxc
https://www.youtube.com/watch?v=3SfjRMXvaJU
I made an adapter to mount a throttle position sensor to the side of the dbw throttle body. This provides a signal for megasquirt and does not mess with the safety and reliability of the vw system. There are tons of Mk4 jetta/golfs in the wrecking yards so these parts are very easy to come by and there are many different throttle bodies that will work with these ecus, even one from a dodge 5.7 hemi!
I know from my experience building the twin engine jetta vr6 w8, that multiple ecu's will read a single throttle pedal when wired in parallel. This means there are many new possibilities for crazy intake manifold designs using multiple throttle bodies where a mechanical linkage between them is not possible or practical.

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