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FreeMAP - Taking the bullsh*t out MAP selection. 
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LQFP112 - Up with the play
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Joined: Fri Feb 26, 2010 5:26 am
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There is a lot of information floating around about OEM Map sensors, which ones are better for what uses, how accurate they are, so on. A fair chuck of it is just plain rubbish and has NO scientific backing, as I have come to find.

With the above in mind, I have built a specific test bed to test and then compare MAP sensor results.

The project can be followed here https://github.com/presto/MapSensors at the moment the data is in excel spread sheet format, that can be opened in open office too. There is a pdf version for good measure.

The AIM here is to clear the air for MAP sensors! get reliable tested and accurate information about each unit and house it all nicely in one location.

Let the work begin!!

Preston.


Wed Dec 28, 2011 8:26 pm
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Good man! Presto, you should grab Sim's results from his thread(s) and include them, they proved to be fairly accurate. Also, chuck the original images in an images dir in the repo with informative names :-)

I look forward to using your data to select cheap DIY MAP sensors in future! :-)

Fred.

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Wed Dec 28, 2011 10:53 pm
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LQFP112 - Up with the play
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Hi Presto

I have 2 more sensors that you can test and add to your list.

Denso 079800 1691 5V PS-22

And

Toyota 89421-20020 079800-0343 5V

I am happy to loan them to you for testing.


Wed Jan 04, 2012 8:31 pm
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LQFP112 - Up with the play
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Spudmn wrote:
Hi Presto

I have 2 more sensors that you can test and add to your list.

Denso 079800 1691 5V PS-22

And

Toyota 89421-20020 079800-0343 5V

I am happy to loan them to you for testing.
Wicked, we will do that!!! man we gotta catch up and I'll grab the sensors then, I want to see this mini in action :P


Wed Jan 04, 2012 9:46 pm
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The three of you, Dan, Preston, Aaron all need to catch up, but AT the OS.co.nz meet at BF with your cars, on trailers if need be, for an impressive show of tech for the os.co.nzers :-)

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FreeEMS dev diary and its comments thread and my turbo truck!
n00bs, do NOT PM or email tech questions! Use the forum!
The ever growing list of FreeEMS success stories!


Wed Jan 04, 2012 11:26 pm
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Presto, do you have this sensor:

The MAP sensor on the engine AN08:
079800-5410
5V PS-4A
DENSO

It's from that 2002 Honda, we need a good calibration for it :-) K, thx, bye.

Fred.

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FreeEMS dev diary and its comments thread and my turbo truck!
n00bs, do NOT PM or email tech questions! Use the forum!
The ever growing list of FreeEMS success stories!


Thu Feb 02, 2012 8:36 pm
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Bump for similarly high-quality data for any other sensors out there!

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FreeEMS dev diary and its comments thread and my turbo truck!
n00bs, do NOT PM or email tech questions! Use the forum!
The ever growing list of FreeEMS success stories!


Thu May 23, 2013 11:07 pm
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LQFP112 - Up with the play
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From a Honda Civic, I'm pretty sure:

Image

Tested with a multimeter and a Mityvac pump with a gauge:

Image

(Feel free to copy/publish the pictures.)

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Fri May 24, 2013 3:09 am
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Most likely from a Civic or Legend:
Denso 079800-1691

Prelude:
Denso 079800-2520

Spreadsheet

The power supply was a crappy universal one so the 5Vin was less than ideal. The pump was a Beta 960P w/ gauge, Vout was measured with a cheap multimeter :?


Sun May 26, 2013 10:33 pm
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Apparently the other side of both above sensors, and likely other ones too, look like this:

Image

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DIYEFI.org - where Open Source means Open Source, and Free means Freedom
FreeEMS.org - the open source engine management system
FreeEMS dev diary and its comments thread and my turbo truck!
n00bs, do NOT PM or email tech questions! Use the forum!
The ever growing list of FreeEMS success stories!


Sat Jun 01, 2013 8:35 pm
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