GM 3 Bar MAP Install

I actually ran a vacuum line into the cabin and mounted the sensor to the ECU bracket and tapped into the ECU harness there. I happened to have a hard plastic vacuum line from a Taurus that had the perfect bends to run from the manifold right along the firewall and through the grommet on the passenger side.

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Originally Posted by Jimvr4

Got the sensor. I'm thinking of mounting on the firewall since the boost tee is right there. Then extending the harness and running it down through the grommet with all 3 wires to the ECU connectors. I'll tap 5V (pin 42, sensor impressed voltage) , GND (pin 49, sensor ground) , and pin 92 right there.

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You can use the egrt wire if you want and there's a spot to tap into on the firewall. Details can be found in the below link.

3000GT/Stealth International Message Center

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Originally Posted by Zybrainn

You can use the egrt wire if you want and there's a spot to tap into on the firewall. Details can be found in the below link.

3000GT/Stealth International Message Center

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No thanks :) I know exactly what I'm doing with those wires.

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Originally Posted by Jimvr4

Just bought one of these on Ebay. For $30 it even comes with the pigtail. Now I'll be able to remove my AVC-R for good as I was only using it for a MAP sensor to log boost :)

3 BAR MAP SENSOR GM STYLE GMC TRANS AM GRAND NATIONAL FIREBIRD TURBO BOOST

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Just a heads up on that sensor, pressure test it and pressure test it often!!!! I bought one of those and it leaked badly. Worst $30 I ever spent. I ponied up for the real sensor and all is well. Expect to pay $60-70 for a quality sensor.

This is the one I replaced the junk with. GM 3 Bar Map Sensor - MAPerformance

It doesn't come with a pigtail so you'll either need to purchase one or you'll need to slightly modify the junk ebay sensor's pigtail.

Jeff

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Originally Posted by kywhitelightning

Just a heads up on that sensor, pressure test it and pressure test it often!!!! I bought one of those and it leaked badly. Worst $30 I ever spent. I ponied up for the real sensor and all is well. Expect to pay $60-70 for a quality sensor.

This is the one I replaced the junk with. GM 3 Bar Map Sensor - MAPerformance

It doesn't come with a pigtail so you'll either need to purchase one or you'll need to slightly modify the junk ebay sensor's pigtail.

Jeff

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Huh. You're the 3rd person to report issues with that sensor leaking in the last couple weeks.

Good to know. I will steer people away from it.

I think I got the delphi version from amazon, seems okay

http://www.amazon.com/gp/product/B00...?ie=UTF8&psc=1

Huh. . I think i have the improved 3.0 bar on my website. .. With the connector. . $50... have had no problems with them

Quote:

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Originally Posted by kywhitelightning

Just a heads up on that sensor, pressure test it and pressure test it often!!!! I bought one of those and it leaked badly. Worst $30 I ever spent. I ponied up for the real sensor and all is well. Expect to pay $60-70 for a quality sensor.

This is the one I replaced the junk with. GM 3 Bar Map Sensor - MAPerformance

It doesn't come with a pigtail so you'll either need to purchase one or you'll need to slightly modify the junk ebay sensor's pigtail.

Jeff

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Jeff, thanks for the heads up. I have a Mityvac 8500 so I will test it for both pressure and vacuum before installing.

Remember that not all MAP sensors measure vacuum.

...and almost none of the map sensors are relative. They are mostly absolute.