max egt's?

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Mar 24, 2017 | 06:23 AM

#31

KES08

Mountain Pass

Joined: Feb 2012

Posts: 164

Likes: 0

From: Ohio

Quote:

Originally Posted by BOHAWG175

If the Turbo is not forcing air into the engine the engine is sucking air which causes a vaccuum. A negative reading on a boost gauge is basically telling you how much vaccuum your engine is pulling. Mine does it as well.

That's not true. Boost is typically calculated by the computer taking differences in the barometric sensor, MAP sensor and EBP sensor. If you show negative boost it just means you have a guage reading off a bit. Baro should read 14.7 psi and at idle and the map sensor (and if it has an EBP sensor) should read close to the same. Differences in altitude do affect the readings so it could have to do with your height above sea level as well. Either way, something is a bit off.