Quote:
Originally Posted by christuna
can't speak for w124 but on a w123 240d it was basically maximum vacuum pump vacuum
and logically speaking your modulator should be getting most vacuum at idle/coasting
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Completely different system.
Here's a 603 VCV, free of any leaky attachments:
https://www.youtube.com/watch?v=WZzY6t2InrY
When installed, there is a restrictor between the VCV and the BUFO, so lots of opportunity for vacuum to attenuate. Check your hoses.