ECMlink Simple MAP Sensor Question

[JayB12]

I'm going to buy an AEM Digital boost gauge (35psi one) and they come with the boost sensor, I was wondering if I could use the 0-5v analog wire and log it in ecmlink like a map sensor from the MDP spot on the ecu, similar to how my wideband is wired. Also, if this will work, I wanted to do SD down the road and I was going to use ecmlink's kit and the plug and play harness they sell as well. I wasn't sure if I would have issues? Sorry, it seems simple but I wasn't sure.

On a side note, which pin do you guys wire your widebands to? I did mine for my 2g on the rear o2 and 1g's don't have them.

 

[edged1g]

Yes, you can use it to log boost, but I read over on the link forums that one user got direct advice from AEM NOT to use the same signal to run SD. Also, on a 1G you can use the EGR Temp, or Baro input for the sensor.

 

[LiquidX]

Yes, I contacted AEM and the signal is no good for SD after its been processed through the gauge.

For speed density, use the silver sensor and not the brass sensor.

 

[acc1079]

For speed density, use the silver sensor and not the brass sensor.

I have not heard of that before. Please expand as I am interested. Thanks.

 

[JayB12]

Here is what Tom from ECMTuning said when I asked.

It may be possible to use the AEM sensor for SD operation too, though. You just have to manually define that sensor's mapping for SD operation (separate from logging/display) using the "user defined" option in the ECU Inputs tab for the MAP sensor. It's a bit more work, though. And you'll need to make *sure* the AEM sensor is providing an absolute pressure reading instead of gauge pressure.

 

[LiquidX]

That's what the AEM tech told me. There is a reason the brass and silver sensors are about $80 apart. The silver more accurate and the specs can be found on their site.

 

[acc1079]

That's what the AEM tech told me. There is a reason the brass and silver sensors are about $80 apart. The silver more accurate and the specs can be found on their site.

I see.

Thanks for the reply, going to research now.

 

[LiquidX]

Brass 5 bar

Sensor Performance Specifications:
Accuracy: +/- 3% Full Scale over -40C to 105C includes Repeatability, Hysteresis and Linearity
Operating Temp: -20C to 105C / -4F to 221F
Burst Pressure: 150PSI
Response Time: < 1mS
Wetted Materials: 304L & 316L Stainless Steel
Vibration: 100 to 2000Hz, 20g Sinusoidal, 3 Axes
Weight: <85g
Supply Current: <6mA at 5 Vdc
Output: .5 to 4.5Vdc Linear
Transfer Function: PSI = (18.75*(Voltage))-24.075
Elec. Termination: Integral weatherproof connector, includes mating connector & pins(Supply Voltage 5Vdc +/- .5, Ground, Output)

Stainless 5 bar

Accuracy: +/- 0.5% Full Scale over -40C to 105C includes Repeatability, Hysteresis and Linearity
Operating Temp: -40C to 105C / -40F to 221F
Burst Pressure: 750PSI
Response Time: < 1mS
Wetted Materials: 304L & 316L Stainless Steel
Vibration: 100 to 2000Hz, 20g Sinusoidal, 3 Axes
Weight: <85g
Supply Current: <6mA at 5 Vdc
Output: .5 to 4.5Vdc Linear
Transfer Function: PSI = (18.75*(Voltage))-24.075
Elec. Termination: Integral weatherproof connector, includes mating connector & pins(Supply Voltage 5Vdc +/- .5, Ground, Output)


You can see the large difference in accuracy.