OK, you may need another logger then, but I am confident that I know what I am talking about, it seems you are finding info that seems to agree with what you want, yet you have yet to show me anything that works how you think it should.

It is not going to work that way with any of our devices or ...

they are all 0-5v, a PRESSURE sensor will always read 14.7 psi at atmospheric pressure, as thats what the pressure is....you need a vacuum/boost gauge if you only want to see boost above atomspheric.

READ what I I typed. That's what I've been stating. Other data loggers are ADJUSTABLE and will ...

No, you are not following, they are all going to read 14.7 psi at atomspheric pressure.

I know this and that's what I said above. Other data loggers allow the user to change the voltage offsets (or they have a list of XDCR's to choose from) so the data loggers will read true pressures but the ...

UPDATE:
As was stated the Diablo cannot log boost as-is b/c MAP and pressure sensors always start at a voltage greater than 0 Volts. So even with the key on (engine off) the sensor is putting out the minimum voltage that the sensor operates at which equates to some amount of boost being logged even ...

I dont think it is going work how you want it to, as they are ideally going to read 14.7 psi for atmospheric then you'll have to subtract that from the total value to see actual boost.

So how do others log boost? This doesn't make any sense to me. Everyone that runs a blower or turbo logs boost ...

Id check the the sensor manufacturer or others who have used this sensor as an analog input.

This F***King sucks. I'm getting tired of buying pressure xcdr's. This new 4 BAR MAP sensor I just bought (this is the THIRD XDCR) starts at 1.3V with key on. I can't find ANY that operate from 0-5v where ...

The more I pull my hair out the clearer things may be getting...

Using a GM 4BAR MAP sensor should be what I need, CORRECT????? Don't these operate at a true 0-5v???

ks

No, thi si snot an intune or dv issue, the tool simply reports what the device says is equal to the corresponding voltage...if it wants to display 15 psi at idle, we cant change that.

The device is registering .7 volts at idle and it should be .5 volts so this is part of my issue but this brings ...

mikel wrote:No, thi si snot an intune or dv issue, the tool simply reports what the device says is equal to the corresponding voltage...if it wants to display 15 psi at idle, we cant change that.

Gotcha. Hopefully there's some voltage or ?? that's showing up causing the funky reading.

ks

no, the sensor is reading correctly likely, but showing atmospheric pressure.

I have no experience with such a sensor so I am suggesting that you contact the sensor manufacturer or others who have used t to measure boost.

If I verify that there is no voltage on the output wire but the Intune is ...

I called AEM and I currently have it connected properly which is good.
I'm going to see if there is some voltage on the output wire at idle although there should not be any. If there is about 1V at idle then this equals about 15psi.

ks

Id check the the sensor manufacturer or others who have used this sensor as an analog input.

Now you're losing me: You think the sensor itself is not reading correctly...?

Here's the link to the data sheet for this xdcr:
http://aemelectronics.com/files/instructions/30-2130-100%20Sensor%20Data ...

OK, my bad, not sure why I thought it was trinity.

I have never used a pressure gauge but base atmospheric pressure is usually ~14.7 psi, so you may need to compensate for that.

OK.. That makes perfect sense.
Now the million dollar question: How/where do I compensate for it? Any detailed ...

2 things...

1. is it trying to show atmospheric at idle?
2. Have you tried the built in boost gauge on the trinity?

Thanks for replying.

1. No clue. How do I verify and modify this if it is?
2. I don't have a Trinity so I haven't tried anything beyond trying to get the xdcr wired properly and ...

I thought I figured it out but guess not. Initially I had the "SIGNAL GROUND" from the XDCR connected to the sheet metal of the car but I changed it today and connected it to a Signal Ground from the cars computer. This gave me different reading but now it's reading 13psi of boost at idle..

The AEM ...