Thread: Torque App
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      12-01-2011, 12:46 PM   #11
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Drives: 2007 335i
Join Date: Nov 2011
Location: Minnesota

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Alright,

So I turned on a display for current barometric pressure. It turns out, at about 800ft elevation, it's reading 14.4psi.

So I set the turbo boost/vaccum display to a -14.4 correction. It was still reading positive 4-5psi of boost at idle, and running up into the teens under throttle.

I adjusted the correction to -10, and it seems to display about 0psi at idle. I throttled the engine up to 5kRPM, which produced a 7psi reading (but I was in my driveway, so no load). These appear to be about the right ranges, but I suspect load will drive the psi display higher.

I will report back when I actually have a chance to experiment some more.

The question is, once under load, will I be getting readings in excess of 8psi. And if so, WTF?

Also, why would a -10 correction work if I'm actually at 14.4?
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