Omni 4bar readings Vs Boost guage readings.
 

Just installed omni 4 bar. Doing some logging at idle. Its reading -8.5 ish but my boost guage reads -15 at idle.

This is for rom 96530706.


Do you need to change formulas? Or is this accurate info?
I read on here for my rom just input the formula into evoscan and it just works.

Clarify please? Manufacturer of your boost gauge? I am assuming your utilizing PSI calcs? You need to edit the equation in evoscan to represent your ambient PSI.

My gauge reads 12 vacuum at idle, and my evoscan registers -4 ish. During a pull it registers boost correctly within very close reason to gauge vs. evoscan.

Thanks for the reply RaceGhost.

Its a mechanical 30 psi autometer guage. I have cams so i am seeing -15 inches of vac on my mechanical guage. Just installed omni 4 bar to log boost.

Evo scan 2.9.

Logging Omni 4 bar in evoscan. Request 38- Function 0.2369*x-14.7 Units psig.

I havent compared boost readings but right off the bat im only seeing about -8.x inches of vac via evo scan and omni 4 bar.

:beer::beer::beer::beer::beer::beer:

I assume that you are confused by the readings you see.
The Gauge reads : -30 inHg --- 0 inHg/Psi --- 30 Psi

-15 inHg equals about -7.5 Psi at sea level.. so different scale..

Evoscan read only PSI

0 PSI = 0 inHg
-7.5 = -15 inHg
-15 PSI = -30 inHG

you get it....

Ahhhh i see now... Thanks Germ