Boost Measurement Variations
Cargo Master
Joined: Apr 2022
Posts: 3,191
Likes: 1,696
Wonder if the add on edge sensor is bad or setup on the wrong scale like it's setup for 0-100psi instead of 0-50psi. It's been a while since I added a sensor on to mine so can't remember what all options there were. Worth checking and playing around with though. Swap sensor with the fuel pressure sensor and see what they read if there is any change to see if sensor is off or bad.
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Tuned
Joined: Oct 2020
Posts: 418
Likes: 178
From: Piedmont of N.C.
[QUOTE=Tpayne621;21153237]If you looked at the pics, you can see that the MAP reading that shows is set to boost. I went over this with EDGE customer service while driving without any resolution. It has stumped me so far. I totally understand what you are saying about absolute and gauge pressure, they are two different readings. Maybe I’m missing something in the setup. Before I added the boost fooler, I was seeing well over 21 psi from the MAP sensor, but never much more than 12-13 from the EAS sensor and CTS3 display. Go figure!
Cargo Master
Joined: Apr 2022
Posts: 3,191
Likes: 1,696
[QUOTE=OldMechanic57;21153252]
If you looked at the pics, you can see that the MAP reading that shows is set to boost. I went over this with EDGE customer service while driving without any resolution. It has stumped me so far. I totally understand what you are saying about absolute and gauge pressure, they are two different readings. Maybe I’m missing something in the setup. Before I added the boost fooler, I was seeing well over 21 psi from the MAP sensor, but never much more than 12-13 from the EAS sensor and CTS3 display. Go figure!
I understand that and see that in your pics. I was saying it for the other people mentioning it. I said at the end that's not your issue. There all reading the same actual gauge pressure.
If you looked at the pics, you can see that the MAP reading that shows is set to boost. I went over this with EDGE customer service while driving without any resolution. It has stumped me so far. I totally understand what you are saying about absolute and gauge pressure, they are two different readings. Maybe I’m missing something in the setup. Before I added the boost fooler, I was seeing well over 21 psi from the MAP sensor, but never much more than 12-13 from the EAS sensor and CTS3 display. Go figure!
Thread Starter
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Tuned
Joined: Oct 2020
Posts: 418
Likes: 178
From: Piedmont of N.C.
Wonder if the add on edge sensor is bad or setup on the wrong scale like it's setup for 0-100psi instead of 0-50psi. It's been a while since I added a sensor on to mine so can't remember what all options there were. Worth checking and playing around with though. Swap sensor with the fuel pressure sensor and see what they read if there is any change to see if sensor is off or bad.
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Tuned
Joined: Oct 2020
Posts: 418
Likes: 178
From: Piedmont of N.C.
I edited the last post I made, but the pressure for both of them are on 0-100 I believe. I’ve actually already tried it both ways to no avail. It is not really an issue as the engine runs like a scalded dog with all of the mods I have made. It just bugs me. I am guessing that the MAP sensor is correct anyhow as I had to put the boost fooler on to keep from derating the fuel. On the other had though, I have a sensor that is lying to me and I can’t see what my boost is above 21 psi.
Lead Driver
Joined: Jul 2017
Posts: 6,853
Likes: 2,330
From: WV
Are we sure the EAS boost sensor itself is 0-100 range? If it’s a 0-50 sensor then that could explain it.
But you’ve tried both scales with no change? That should change the read out regardless if it’s correct or not. 🤷♂️
But you’ve tried both scales with no change? That should change the read out regardless if it’s correct or not. 🤷♂️
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Tuned
Joined: Oct 2020
Posts: 418
Likes: 178
From: Piedmont of N.C.
I’ll try it again soon and update.
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Lead Driver
Joined: Jul 2017
Posts: 6,853
Likes: 2,330
From: WV
I did a quick search for “edge eas boost sensor.” Everything that was popping up seemed to show as 0-100. So this is unlikely to be your problem. I’d pull the part number from the sensor itself and Google it.
Only thing left I can think of is a short in the Edge wiring. Or something wrong with the CTS itself.
Idea! Maybe try adding the sensor/channel again under a new function. Like Oil Pressure or such. See if it acts the same. I’m not sure how those are added in since my only add on is the EGT probe. Just a thought.
Like you, I also tend to believe your MAP sensor reading based on you stating where it cuts off as max of 21 with the boost fooler. And with how you say it runs really well.
Only thing left I can think of is a short in the Edge wiring. Or something wrong with the CTS itself.
Idea! Maybe try adding the sensor/channel again under a new function. Like Oil Pressure or such. See if it acts the same. I’m not sure how those are added in since my only add on is the EGT probe. Just a thought.
Like you, I also tend to believe your MAP sensor reading based on you stating where it cuts off as max of 21 with the boost fooler. And with how you say it runs really well.
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Tuned
Joined: Oct 2020
Posts: 418
Likes: 178
From: Piedmont of N.C.
I will try it and update as soon as I can. Probably tomorrow.
Cargo Master
Joined: Apr 2022
Posts: 3,191
Likes: 1,696
That may explain why it's double what it should be. The sensors just send a voltage reading to the edge and it converts it. If you have it set on 0-50 with a 0-100 sensor the same voltage reading would make it readout roughly twice as high of what it should be. Make sense?
Lead Driver
Joined: Jul 2017
Posts: 6,853
Likes: 2,330
From: WV
I agree, it looks like it’s just half of what it should be and setting to 0-100 should take care of it.
Cargo Master
Joined: Apr 2022
Posts: 3,191
Likes: 1,696
Correct. Got half and double mixed up but you knew what I meant. lol