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Hi,
I am converting my 78 Beetle with an air-cooled VW boxer engine to EFI, and I am planning to use two DBW throttle bodies, one for each pair of cylinders on either side of the boxer engine.
As mentioned in other webinars about ITBs, when using more than one throttle body it is very important that they are perfectly synchronized for the engine to run smoothly (this is also true for Beetles with dual carbs).
How does that synchronization work with two drive-by-wire throttle bodies? Are they precise enough that synchronization is not needed?
I will be using a FuelTech FT550 ECU. From what I have gathered in the software, it is possible to run two DBW throttle bodies as long as they are identical, but there are no settings regarding synchronization.
By the way, I am planning on using OEM DBW throttle bodies from the modern VW Up, made by Continental (they are already supported by the FT550).
For reference, here is a picture of the intake manifold with a DBW throttle body:
I think you'll find two identical DBW throttle will be more equal than any mechanical linkage for ITBs. I would just calibrate each one to the same full closed position, and see how how balanced you are.
