boost pressure shows incorrectly

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Mgedix
Posts: 3
Joined: Tue Mar 16, 2021 12:13 pm

boost pressure shows incorrectly

Postby Mgedix » Fri Oct 08, 2021 11:10 pm

Hi
the boost pressure shows incorrectly, I have a boost pressure of 1.4-1.6 bar, but the display shows 2.3 bar. how do i set it right?

thanks

ArT
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Re: boost pressure shows incorrectly

Postby ArT » Mon Oct 11, 2021 9:35 am

I guess you are using external MAP sensor. You need to provide sensor data in UTCOMP settings (settings -> advanced -> pressures -> boost). If you do not know scaling data I can help you scale it. Do you have possibility to check boost pressure via obd2? We will need 2 measurements points pressure/voltage.

Mgedix
Posts: 3
Joined: Tue Mar 16, 2021 12:13 pm

Re: boost pressure shows incorrectly

Postby Mgedix » Thu Oct 14, 2021 5:48 pm

Hi
at 0.52v at Ut-comp, the opcom shows me 102 Kpa, so I think the ambient pressure must be subtracted, when idling I have negative boost pressure, the display shows that -0.9 bar. Only when I have boost pressure does it show me too much.

ArT
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Re: boost pressure shows incorrectly

Postby ArT » Fri Oct 15, 2021 11:26 am

please let me know your "a" and "b" parameters in settings for boost sensor and please fill below table, I'll check your scaling:

pressure from opcom (kpA) | voltage on UTCOMP input
100kPa = .... volts
200kPa = ... volts

it does not have to be exactly 100kPa or 200kPa


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