NB Boost sensor (Factory MAP sensor) calibration - Page 2 - Miata Turbo Forum -Boost cars, acquire cats.

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Old 09-07-2016, 05:33 PM   #21
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Quote:
Originally Posted by 18psi View Post
Interdasting cause over the many years and years of the M-S folks looking into this, no one has ever been able to confirm that the MSM actually see's or records or references boost in any meaningful way. (as in, it actually see's the 6-8psi that it makes when in OL)

MSM_MAP(psi)=7.811*(MAP_V)-5.764 @25C and 250m above sea level






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Old 09-07-2016, 06:01 PM   #22
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what are we looking at? Bluetooth/torque app?
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Old 09-07-2016, 06:09 PM   #23
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Originally Posted by 18psi View Post
what are we looking at? Bluetooth/torque app?
Torque cannot read enhanced(extended, factory, etc) Mazda/Ford PIDs.

You need Ford IDS with VCM adapter or software/app with Ford/mazda factory PIDs

You look at Forscan for Android
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Old 09-07-2016, 06:30 PM   #24
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Cool. So then it does reference map/boost? do you have a plot or log to show us?
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Old 09-07-2016, 06:56 PM   #25
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Originally Posted by 18psi View Post
Cool. So then it does reference map/boost? do you have a plot or log to show us?
In the current version Forscan shows boost( MSM_MAP(psi)=7.811*(MAP_Voltage)-20.464 ) despite PID name is MSM_MAP( MSM_MAP(psi)=7.811*(MAP_V)-5.764 ).
I will ask Forscan developers change the PID name in the next revision.
and it reads second IAT(after intercooler) on MSM(this is not actual for aftermarket ECU owners )
Attached Files
File Type: xls 1LiveData_2016-08-04_19.06.32.xls (551.5 KB, 4 views)
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Old 09-07-2016, 06:59 PM   #26
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Well I stand corrected

Never saw that before.
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Old 09-07-2016, 07:01 PM   #27
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Originally Posted by irodd View Post
and it reads second IAT(after intercooler) on MSM(this is not actual for aftermarket ECU owners )
what does this mean? I always use the 2nd AIT for MS3x MSM builds when the user doesnt want to install a GM AIT Sensor...
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Old 09-07-2016, 07:08 PM   #28
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Originally Posted by Braineack View Post
what does this mean? I always use the 2nd AIT for MS3x MSM builds when the user doesnt want to install a GM AIT Sensor...
I am sorry, it is my poor English :(
I mean "Ability to read IAT2 via OBD2 is not important for aftermarket ECU owners"
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Old 09-07-2016, 07:10 PM   #29
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oh okay, gotcha.
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Old 09-10-2016, 08:05 PM   #30
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Default And for the empirical engineering

Quote:
Originally Posted by Reverant View Post
0V - 15kPa
5V - 115kPa
I started with that, with the MAP in the MS and the "Boost Sensor" connected together with a vacuum pump.

To get them to read together from 61 to 98 kPa, i ended up with these values:

0 = 3
5 = 119

Of course, I'm really only interested in 85 to 102 where I'm going be driving.

Boost Sensor Connected to tube from Manifold


Tube from Boost gauge ready to be connected to vacuum pump


Low end: MAP = 69, Baro =68


High end: MAP = Baro = 98
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