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Omni 4bar map sensor Plug and Play

 
Old Jan 22, 2009, 05:45 PM
  #31  
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Originally Posted by mrfred View Post
Wow, that is a pretty cool sensor. As far as hardware connections go, it appears to be 100% plug-n-play. I'm thinking that this will be the "other" map sensor that I'll code for direct boost control.
Noiceeeeeeeeeeeee!!!!!!!!!!!!!

Waiting for this on my project car as it sees 32-34psi
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Old Jan 22, 2009, 08:27 PM
  #32  
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Nice, I need something that will read 45 psi and ill be happy.
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Old Jan 22, 2009, 08:55 PM
  #33  
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This is a really cool find I had no idea there was a pnp 4 bar sensor available.

Bryan
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Old Jan 22, 2009, 10:08 PM
  #34  
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Originally Posted by Dapper Dan View Post
Nice, I need something that will read 45 psi and ill be happy.
I guess you'll have to use the 5 bar sensor then i believe the cap on a 4 bar is about 43psi, a 5 bar will read 58psi.
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Old Jan 26, 2009, 11:53 AM
  #35  
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Omni Power MAP sensor

I've already tested these out using the AEM EMS and they work great. I haven't had time to play with them using the stock ECU yet. Hopefully in the next week or so i'll get some time to test it out.
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Old Jan 26, 2009, 12:14 PM
  #36  
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Originally Posted by MR Turco View Post
yeah the fact that it states its plug and play is obviously a lie. while it might be compatible with the harness there is no way the ecu will be able to just read 4bar values.
thats why its plug and "play".
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Old Jan 27, 2009, 03:17 PM
  #37  
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Omni Power makes these sensors up to 7 bar i think. If there is interest im pretty sure they would offer a 5 bar version. I just really hope this picks up and mrfred uses these sensors for his boost control patches in the future. We can finally have a alternative to the JDM Map sensor.
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Old Jan 27, 2009, 03:26 PM
  #38  
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very good find.. I will be getting this as soon as I can.
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Old Jan 27, 2009, 03:44 PM
  #39  
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the problem with higher bar rated sensors is that they often are less accurate.

just like turbo's you are best sizing your MAP sensor so that it fits your setup.
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Old Jan 28, 2009, 04:22 AM
  #40  
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ive used them on Hondas before very accurate and requires no rewiring is always a plus
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Old Jan 28, 2009, 10:40 AM
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This might be a nice alternative for the Aem 3.5 sensor.

Bryan
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Old Jan 28, 2009, 10:55 AM
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Dont they advertise 10x the accuracy of other 4 bar sensors. And a 0.01 accuracy.
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Old Jan 28, 2009, 01:32 PM
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The reading is more sensitive to resolution the ADC then the accuracy of the sensor as most pressure transducers are very accurate.

An 8-bit ADC with a 4bar MAP sensor has a resolution of ~0.01568 bar (or 0.2275 PSI).
A 3 bar has a resolution of ~0.1177 bar (or 0.1706PSI).

That's assuming the sensor uses the full scale of the ADC, which it usually doesn't and actual resolution is usually even lower.

This is a pretty signifigant detail when using a MAP based system as your resolution goes to crap, the fueling becomes very unstable.
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Old Jan 28, 2009, 02:52 PM
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^ yeh but we can use a 11bit ADC if we want...
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Old Jan 28, 2009, 03:14 PM
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Is the MDP input an 11-bit or is this a different input?
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