Background

IS300 turbo swap. 2JZ-GET conversion. Dodo racing lower intake runner to allow 2JZ GTE FFIM to be installed.

The FFIM that I have has a number of VSV's (vacuum switching valves) and would also appear to not have a larger port for the brake booster.

Using the piping diagram for an Aristo (cant attach an extract of it for some reason), I am trying to work out how it will works and what can be removed for the bare minimum.

Diagram being referenced.
https://toyota-img.amayama.com/imgjp24/A2/171113N.png


I want to reduce the amount of vacuum lines to a minimum but I can't work out what the VSV's are doing and if they can be removed. Similar issue with the pressure surge tank - is this also required.

At the moment, I can identify the fuel vapor line connection - so that will be connected, but the GE has a VSV with it where as the GTE appears to not use a VSV for the same connection so I am unsure if one of the other VSV's is connected through internal porting to this port.

Is there a guide or document that outlines what can and can't be removed.

Thanks