scaler settings for units. psi, kpa, bar etc | AEM
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Cizcorners
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Joined: 08/27/2017 - 07:39
scaler settings for units. psi, kpa, bar etc

How do i find out what the page is reading originally?

when you use a already made template, and go to display>outputs, you cannot see if its scaling for PSI, or KPA etc... i want to find out how i can figure this out?

My ecu(link) is seeing PSI for fuel pressure.

I want to see fuel pressure in PSI on the cd7 dash.

The template ive used is from AEM in USA extension, so that should be already scaled for PSI on fuel pressure, right?

But my fuel pressure on the dash was showing 300! so i figure it must be showing in KPA? 300kpa = 3b = 45psi, so sounds about right. I then use the insert new output and make a new name "fuel pressure psi", use the convert kpa to psi conversion and bingo, got it to show ~45psi

The scaler for the fuel pressure in the setting was : 0.580151 and offset : 0 .

 

So why was it showing in KPA? is the scaler incorrect in the first place? ( the same is happening to my oil pressure btw ), im assuming you can easily make a mistake by putting PSI on the dash graphics, but use KPA(or other unit) in the scaler conversion.

Is there anywhere i can see what scaler is used for what format/unit? so i can double check all of my numbers.

 

Cizcorners
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Last seen: 2 years 3 weeks ago
Joined: 08/27/2017 - 07:39
Example. I was using a US

Example. I was using a US template so boost should be in PSI, but im getting a reading in the positive, +9psi.

How do i make it read in negative ( vacum while idling), and then in positive pressure(boost)?

Am i assuming correctly that the reading is +9psi because atmospheric pressure = 14.7psi so minus my vacum (in this case ~5.7psi = 9psi?

Cizcorners
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Last seen: 2 years 3 weeks ago
Joined: 08/27/2017 - 07:39
UPDATE.

UPDATE.
ok, with some help its all figured out now.
I was using manifold pressure but need to use Boost pressure if you want the gauge to read like a normal boost gauge would.
All working great now :)