Has anyone used the omni 4 bar sensor yet?

Does this log up to 4 bar of boost or is it really a 3 bar capable sensor for logging and the switch to SD?

With what I know of 3 bars, mostly gm stuff, that is good to 28 psi. I would like to have the capacity to go higher then that someday since I run 26 on pump now.

4 bar should be good to over 40 if I am thinking about this right

 

You can run any sensor that you want if you have the scaling for it. IIRC the omni 4bar is fairly common for this swap and the scaling should be in post 2 of this thread.

4bar would in fact get you to approximately 43psi or something like that.

 

We have tuned the 4bar to 40psi +/-

 

I've noticed other members maps with loads as low as 7ish. My lowest load logged so far has been 10.3..which equaled 22kPa. So that figure will be my lowest or first value in the MAP table correct?
Or, would I want to go lower just to cover my ****?
And then, depending on my trouble spots, or where I want my most resolution, I go up from there?...
My main purpose for this conversion is for E85 low load/cruising areas (ie, jerking/bucking). The interesting thing is, my car doesn't have that symptom on pump. So, I'm logging pump, will switch back to E, note differences. Hopefully should be able to have the "perfect" running car after all of this. Yeah right.

 

Part number is 30-2130-75 and it's a 0-75 PSI map sensor, voltage 0.5v-4.5v

 

That's the AEM part number, but based on the specs you listed, I'm sure that its a Kavlico sensor, so you can use the Kavlico 5-bar scaling in the first post.

 

AEM has not sold Kavlico for 5 years. Voltage/pressure specs are similar though.

 

Do you know the brand?

 

I'm currently reviewing pump gas load/psi maptracer. Is it better to figure out the calc for KPA with an average for that load, minimum, or maximum?
If the lowest load I got on pump was 10.9, would I want my lowest setting to be lower than that, or should that be my lowest setting? I've also noticed that my KPA values are higher than the examples given. Here's what I've got on pump so far...I will do a comparison with E85 in a few days....
10.9 17.6
40.0 55
50 62
60 75
70 90
80 97
120 122
408 408

Edit: I have my values backwards as they sit in ecuflash. I have load on the left and kpa on the right.

 

You should be adjusting your injector size for E85, not your SD tables.

 

You're right. I just want to see if there's a difference between E85 and pump gas load values. I don't even know if there is, but curious.

 

That shouldn't change much unless you change boost, or the boost/airflow changes slightly for some reason with the tune (such as when adding timing / fuel).

 

I have the Omni 4 bar sensor in place on my car right now (still waiting on my gm IAT sensor to come in) and I noticed that when I'm in vacuum the most vacuum I show in Evoscan is around 10.8-11.8 in/hg on a decel, while my gauge will read around -18. At idle my gauge says ~8-10 in/hg while the sensor says ~6 in/hg. That seems a bit odd, especially since the idle is pretty smooth for it supposedly having very little vacuum from the HKS 272's that I'm running. Boost pressure seems pretty well spot on with the gauge reading ~24 and the sensor saying 24.6-24.8 psi.

 

I've seen a few posts where people are talking about vacuum. You do realize that when you are logging a pressure sensor with a scaling for psi that, when in vacuum, your logs will be showing negative psi, right? To get to in/hg it is roughly *2. So, -8psi will be 16 in/hg.

 

Ahahaha!!! Man do I feel like an idiot right now, thanks for clearing that up as it's something I should've remembered. I need to stop looking at Honda roms lol

Unrelated, did you end up finding the culprit for the IPW issue?