Quote:
Originally Posted by Dieselman
That's not true vacuum as the servo has a bleed off when the brakes are not being used. A pipe to a MAP sensor or similar is true vacuum as it is a dead end with no leak off.
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Are you sure about that? My system has a check valve to hold vacuum in there when I'm not using brakes. I T'd into that very line to hook mine up, it pulls a really deep vacuum. Pegs the needle on the top end, decel in gear.