What did you do for your MAP sensor with Terminator X?

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DanP

DanP

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Haven't found much on this anywhere. Terminator X comes with a 3 bar male green Map sensor plug on the harness. My 5.7 L intake from a 2013 Chrysler 300 has the 3 pin. Holley tech said to just run a vacuum tube from the blue tube on the ECU to the intake... but would rather not do that. What did you guys do for this scenario?
 
I don't have one. It would be better (having the ecu MAP as a baro and the MAP mounted directly to the intake with little to no hose) but if you don't have any idea how to go about it, stick with the ECU mounted MAP and a hose barb on the intake. For quicker response, keep the line as short as practical, use small diameter metal line (instead of a hose) with short pieces of hose at the intake and ecu.
 
DanP said:
Haven't found much on this anywhere. Terminator X comes with a 3 bar male green Map sensor plug on the harness. My 5.7 L intake from a 2013 Chrysler 300 has the 3 pin. Holley tech said to just run a vacuum tube from the blue tube on the ECU to the intake... but would rather not do that. What did you guys do for this scenario?
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I'm not running a Terminator, but your question is valid for almost all stand alone systems. I'm using the onboard MAP sensor for barometer and I'm using a Low Doller Motorsports MAP sensor. I threaded the hole where the factory MAP sensor went to 3/8"NPT, and installed a reducing bushing to 1/8"NPT.

1747658860472.png
 
racerjoe said:
I'm not running a Terminator, but your question is valid for almost all stand alone systems. I'm using the onboard MAP sensor for barometer and I'm using a Low Doller Motorsports MAP sensor. I threaded the hole where the factory MAP sensor went to 3/8"NPT, and installed a reducing bushing to 1/8"NPT.

View attachment 1716407081
Click to expand...
Ah that's a good idea! Good work, I may have to go this route
racerjoe said:
I'm not running a Terminator, but your question is valid for almost all stand alone systems. I'm using the onboard MAP sensor for barometer and I'm using a Low Doller Motorsports MAP sensor. I threaded the hole where the factory MAP sensor went to 3/8"NPT, and installed a reducing bushing to 1/8"NPT.

View attachment 1716407081
Click to expand...
Great idea. I may have to go this route. I did fine a MAP sensor for a gen 3 hemi that is a 3 bar that would plug right in for $60.
 
There is no guarantee that it is electrically the same. I was under the impression, some time back, that Holley sensors are pretty much GM based, tho I just don't remember anymore, about the O2
 
It can be setup for a variety of MAP sensors, but much simpler to plug in the hose. Maybe sort out ALL aspects of the swap NA first. More forgiving.
 
racerjoe said:
I'm not running a Terminator, but your question is valid for almost all stand alone systems. I'm using the onboard MAP sensor for barometer and I'm using a Low Doller Motorsports MAP sensor. I threaded the hole where the factory MAP sensor went to 3/8"NPT, and installed a reducing bushing to 1/8"NPT.

View attachment 1716407081
Click to expand...
Just out of curiosity, any reason you didn't just run the factory MAP sensor? I know I've had my problems trying to figure out the actual response curve for my sensor, but ultimately they are all just one form of a 5V output (well, probably 0.5-4.5V, but same difference).

I tried putting a little hand vacuum pump on my sensor and comparing the output voltage with what the gauge said, but it never tracked the same as the onboard MAP sensor for my Megasquirt. I may take another stab at it now that I have an HP tuners reference tune as I think it actually lists the voltage points. Even when I tried to make it follow the onboard sensor I don't think it was the same, but it's a pain to get actual values out of any company, even though they are just generic sensors.
 
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