Hello,

I'm in the process of tuning my Evo IX because my car doesn't run well after I paid to have it professionally tuned. I've done a lot of reading and I'm starting to go through my ROM and take a look at some of the settings. One I am currently looking at is the MAP scaling table. I know that the Tephra v7 maps came setup for the JDM map but I am definitely running the Omni 4 bar.

Here are my MAP scaling table numbers:

0.51 / 25
0.90 / 49
1.29 / 70
1.69 / 96
2.08 / 120
2.45 / 144
2.84 / 170
3.24 / 195
3.63 / 255

These appear to be the JDM map figures. I read this thread and it seems the Omni 4 bar requires a different set of values to read properly: https://www.evolutionm.net/forums/ec...-settings.html. How would this affect my tune? I am setup for ECU controlled boost. And I just setup EvoScan to datalog the Omni map sensor. It was setup to read the GM 3 bar prior to today. I would really appreciate some feedback.

Thank you EvoM in advance!

 

Yes the values in your MAP sensor scaling vary from sensor to sensor. Just make sure you have the right values for the Omni 4 bar MAP sensor and you should be good to go.

 

So, the values in my ROM, which I listed above, are incorrect as I thought?

 

Nevermind, I found Tephra's thread on the Omni 4 bar map sensor settings and it appears my ROM has the correct values. My ECUFlash was not setup correctly which was why I could not read boost levels but I have that setup now.