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Registered
Join Date: Jul 2003
Location: Glorious Pac NW
Posts: 4,184
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I run a GM 3 bar sensor plumbed to the manifold, and a 1.1 bar sensor next to it for baro ref.
A 4 bar sensor will be less accurate around 1 bar; not by much, but certainly a couple of %. That's intended for use with forced induction, obviously.
If you've got an on-board sensor on the MS, I'd probably use that for baro and one on the motor for the manifold, because I'd rather have wires than long vacuum pipe runs (for no especially good reason). And it's pretty rare conditions where atmo actually reads over 1 bar anyway.
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'77 S with '78 930 power and a few other things.
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