Originally Posted by PratoN
EDIT: Although, ShopKey doesn't tell me anything about its existence or whereabouts.
I can't find any sign of it in the service manual either, other than two entries in a copy-pasted diagnostic chart (for "poor idling" and "engine run rough").
EDIT: What I'm reading says that Ti-VCT eliminates the need for an EGR because exhaust gas temperature control can be done in timing. Sources: