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MAP sensor readings

Posted: Mon Apr 25, 2022 3:47 am
by fonzeka
Vehicle S2000, Kpro4, Kmanager V4.5.1, PRB calibration.
I'm installing a supercharger setup and before first startup I wanted to calibrate my new SOS 3 bar MAP sensor and make sure it reads correctly.
I have set MAP sensor as custom with the provided calibration data from SOS.
With ignition on I was hoping it would be possible to apply pressure and vacuum at sensor and check the readings in kmanager.
Is this not possible?
In kmanager my sensor reads 0 kPa flat until I run the starter then it jumps up to 100 kPa and flatlines there until I turn off ignition.
I had injectors and ignition coils unplugged so engine never started.
MAP sensor seemed to work correctly with linear output when tested on bench with separate 5V supply.

Re: MAP sensor readings

Posted: Mon Apr 25, 2022 7:45 am
by Hondata
MAP only is read by the ECU with some engine rpm.

With a supercharger 99% of the MAP sensor problems are people not re-locating the sensor so that it can see boost, so if you have done that you should be ok.

Re: MAP sensor readings

Posted: Mon Apr 25, 2022 7:59 am
by fonzeka
Great thanks for the confirmation, sensor is located on TB just like stock so shouldn't be any problems then.

Re: MAP sensor readings

Posted: Mon Apr 25, 2022 3:25 pm
by Hondata
It is a volumetric supercharger, after the TB, then it will be a problem.

If it is a centrifugal SC that blows through the TB, then it is ok.