MAP sensor wiring help PLEASE!

[duracellttu]

I may be able to test that.
I'm thinking of doing a test where I take my wire out from right beside the fuel injectors (where I have a theory that they are causing signal interference) and over the air box to the DME. This test would keep the location of the MAP sensor itself the same (Kassel adapter).

The next test would be to use my inline MAP adapter.

Those two tests may be able to determine if wiring route and/or MAP position have anything to do with my strange readings.

I just really don't want to pull those wires I spent so much time routing and de-pin too many times as I fear the locking tabs on the pins might only take so much abuse before they don't work. But I am quite curious and there is only one way to find out!

That would be great information,if you could test and share the data. I'm wondering if this is any way related the the infamous CSL airbox "hesitation" at low RPM when trying to punch it.

[Cubieman]

Yeah I remember selling you one on M3F. Either way I would first test the actual connector where it connects to the sensor. Might be loose since Kassel probably puts them together.

Yea, good idea. I noticed they didn't use the the little weather proofing plugs on the connector so I wonder how well its assembled.

[COVID-19]

I've got that adapter and may try that today and see what happens.

Yeah I remember selling you one on M3F. Either way I would first test the actual connector where it connects to the sensor. Might be loose since Kassel probably puts them together.

[Cubieman]

I've got that adapter and may try that today and see what happens.

[COVID-19]

I have a wire coming out of PIN 18 for the signal and ground from 17 and power from 7

And where is your MAP located physically and wiring wise? Someone please feel free to stop me on my fuel injector signal interference idea, but I still have that in my head.

[Cubieman]

Got it to work. My car was kinda warm already BTW. I don’t seem to have a fluctuation at idle.

And where is your MAP located physically and wiring wise? Someone please feel free to stop me on my fuel injector signal interference idea, but I still have that in my head.

[Martyn]

I’ve been using pin 16 for 6 years. It works fine.

Likewise.

[jbfrancis3]

Great stuff. Will Testo log IAT's?

[COVID-19]

Got it to work. My car was kinda warm already BTW. I don’t seem to have a fluctuation at idle.

[Cubieman]

I was going to test mine but my computer doesn’t like my car. Curious to see your results. I still have more adapters incase anyone wants to do some testing lol

I had to switch my USB cable to COM9 for the Testo program to work. Usually I think you'll have it set for COM1 for INPA. But I really don't know much about those things. Just really glad my computer and car like to play together!

[COVID-19]

I may be able to test that.
I'm thinking of doing a test where I take my wire out from right beside the fuel injectors (where I have a theory that they are causing signal interference) and over the air box to the DME. This test would keep the location of the MAP sensor itself the same (Kassel adapter).

The next test would be to use my inline MAP adapter.

Those two tests may be able to determine if wiring route and/or MAP position have anything to do with my strange readings.

I just really don't want to pull those wires I spent so much time routing and de-pin too many times as I fear the locking tabs on the pins might only take so much abuse before they don't work. But I am quite curious and there is only one way to find out!

I was going to test mine but my computer doesn’t like my car. Curious to see your results. I still have more adapters incase anyone wants to do some testing lol

[Cubieman]

Is there any reason to believe that having the MAP sensor in one location versus another has any affect on the accuracy of the reading? Comparing the most popular solutions 1) OEM air rail 2) Kassel 3) Inline adapter from a hose

I may be able to test that.
I'm thinking of doing a test where I take my wire out from right beside the fuel injectors (where I have a theory that they are causing signal interference) and over the air box to the DME. This test would keep the location of the MAP sensor itself the same (Kassel adapter).

The next test would be to use my inline MAP adapter.

Those two tests may be able to determine if wiring route and/or MAP position have anything to do with my strange readings.

I just really don't want to pull those wires I spent so much time routing and de-pin too many times as I fear the locking tabs on the pins might only take so much abuse before they don't work. But I am quite curious and there is only one way to find out!

[Cubieman]

Could my routing of the MAP wiring so near the fuel injectors have anything to do with getting this strange signal?

[duracellttu]

Is there any reason to believe that having the MAP sensor in one location versus another has any affect on the accuracy of the reading? Comparing the most popular solutions 1) OEM air rail 2) Kassel 3) Inline adapter from a hose

[Cubieman]

So pretty much the same. I'd check the other two pins on the map sensor are making good contact.

Reading change at all when you give throttle?

The reading changes with throttle. Pin 18 (Signal) is firmly seating in block via factory type termination. However pin 7 (Power) is attached via a T-tap, when I test for voltage on the spade going into the tap I get 5VDC. I plan to solder but wanted to tap first just to make sure everything worked.
And again this car smells like it is running rich, and again that probably is just a result of the tune.

Maybe there is something to the location of the sensor itself, I do have the other type connector that would go on the brake servo line. Would be kind of pain though because I would have to re-route all my beautiful wiring, but I am curious.