omni 3 bar settings...i've searched
 

to anyone who can help:

I see settings for JDM/EVO X MAP sensors and also for Omni 4 bar.

Which of these am I SUPPOSED to use for the Omni 3 bar? I'm currently using the Omni 4 bar settings with the Omni 3 bar evoscan formula which as of now is giving me pretty good results.

Just double checking and making sure I am using the correct settings.

I saw someone asked this same question in the JDM MAP thread but no one replied.

Are you just logging boost or trying to run ECU Direct boost control or maybe SD?

ecu direct boost with grimmspeed 3 port

On the scaling you need to make a graph comparing voltage values from the 4 bar, 3 bar, and JDM 3 bar and see where they all overlay.

I will be doing a right up on the proper voltage scaling for most of the sensors (other than the JDM 3 bar and Omni4) here shortly. In the meantime you should be able to use the JDM 3 bar voltage scaling and be pretty close.

The Omni 3BAR matches the GM 3BAR with in 1-2%.


GM 3BAR:

EvoScan:
PSIG -> (x*0.17886) + 0.161 - 14.5
kPa -> ((5.0*x/255) + 0.01765)/0.01591

EcuFlash:
To Display -> x*0.31
To ROM -> x/0.31
(Not sure if Direct Boost uses 10-bit ADC scaling like SD or not)

thank you JB and Ceddy