# Does Greddy Take a Standard 3Bar Pressure input (0-5v)?

**URL:** <https://forums.speedlife.net/t/does-greddy-take-a-standard-3bar-pressure-input-0-5v/56687>\
**Category:** NYSpeed Automotive\
**Created:** [October 18, 2008, 5:34pm UTC](https://forums.speedlife.net/t/does-greddy-take-a-standard-3bar-pressure-input-0-5v/56687 "2008-10-18T17:34:02Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![jetlounge](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/jetlounge/32/4994_2.png) [@jetlounge](https://forums.speedlife.net/u/jetlounge)\
**Post date:** [October 18, 2008, 5:34pm UTC](https://forums.speedlife.net/t/does-greddy-take-a-standard-3bar-pressure-input-0-5v/56687/1 "2008-10-18T17:34:02Z")

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I already have a pressure sensor (non greddy) 3 BAR MAP outputs 0 - 5v up to 30psi.

I want to know if I can just get the greddy harness to wire up to an Emanage Ultimate. Seeing conflicting sites and graphs that show their Greddy sensor as 3 bar, but the output voltage is -.5 to 4.5 . Another site shows it as 4 bar (3 above atmosphere, and going to 43 psi)

So…anybody know if I really need to get their sensor in addition to the one I already have? Savings would be about $100

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**Author:** ![jetlounge](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/jetlounge/32/4994_2.png) [@jetlounge](https://forums.speedlife.net/u/jetlounge)\
**Post date:** [October 25, 2008, 8:00pm UTC](https://forums.speedlife.net/t/does-greddy-take-a-standard-3bar-pressure-input-0-5v/56687/2 "2008-10-25T20:00:49Z")

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Let me try this another way. Is 3 bar to 30 psi or to 43 psi? PLX shows their 3 bar sensor as going to 30, Greddy to 43. I believe the 43 includes the first block for atmosphere…but what’s the deal?

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**Author:** ![Viper966](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/viper966/32/7268_2.png) [@Viper966](https://forums.speedlife.net/u/Viper966)\
**Post date:** [October 25, 2008, 9:02pm UTC](https://forums.speedlife.net/t/does-greddy-take-a-standard-3bar-pressure-input-0-5v/56687/3 "2008-10-25T21:02:18Z")

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Some map sensors measure vacuum ( gm type) soMe only measure boost

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<div class="post-metadata">

**Author:** ![jetlounge](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/jetlounge/32/4994_2.png) [@jetlounge](https://forums.speedlife.net/u/jetlounge)\
**Post date:** [October 25, 2008, 9:24pm UTC](https://forums.speedlife.net/t/does-greddy-take-a-standard-3bar-pressure-input-0-5v/56687/4 "2008-10-25T21:24:24Z")

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i see. i believe they both measure vac. Plx posts a chart, and Greddy I found one online, but its not from their corp site. I see in some product descriptions that they go to 43psi. So I called greddy. The guy said it was 0-5v and went to 43 and he said that was a standard 3 bar. But he has no information to provide because apparently all of their documentation is in japan.

This is what I have from the interwebs:  
PLX:  
 ![http://www.plxdevices.com/iMFD/SM-VacBoostVolts.jpg](http://www.plxdevices.com/iMFD/SM-VacBoostVolts.jpg)

Greddy (not from official site)  
 ![http://www.mohdparts.com/emanage/pressure_sensor/greddy_pressure_sensor_chart.jpg](http://www.mohdparts.com/emanage/pressure_sensor/greddy_pressure_sensor_chart.jpg)

Even if they are different, can you set the parameters in the emanage ultimate?