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Torque » Torque OBD ECU Scanner » Torque Discussion / Ideas » Boost adjustment?

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Author Topic: Boost adjustment?
Rackers
Member
Posts: 3
Post Boost adjustment?
on: November 28, 2016 (GMT)

Hi all.

I’m trying to get the most accurate boost reading I can from my Audi A4. I’ve got it set to MAP for boost calculation.

I’m near sea level and the barometer on my phone reads 1022hpA. My current boost adjustment is set to 0. Based on the figure above do I need to adjust it from 0 to another figure?

Thanks

Capp777
Member
Posts: 2993
Post Re: Boost adjustment?
on: November 28, 2016 (GMT)

What does your boost gauge read with KOEO?
Should read near zero.

Your phone baro seems reasonable at sea level.
(1022hPa = 102.2kPa = 1022mb).

Local airport reporting pressure at sea level 1022.4mb
(where I live).
Rackers
Member
Posts: 3
Post Re: Boost adjustment?
on: November 28, 2016 (GMT)

Hi.
Thanks for the quick reply.

I haven’t read it with KOEO. Would that mean I can leave the boost adjustment as is at 0?

Thanks again

Capp777
Member
Posts: 2993
Post Re: Boost adjustment?
on: November 28, 2016 (GMT)

I would unless you are reading something
different than zero with KOEO for Boost.
(Turbo Boost and Vacuum Gauge).
Rackers
Member
Posts: 3
Post Re: Boost adjustment?
on: November 28, 2016 (GMT)

Thank you I’ll leave it at 0. I’m guessing MAP is the best method as its the default preferred?

Thanks again

piemmm
Administrator
Posts: 6629
Post Re: Boost adjustment?
on: November 29, 2016 (GMT)

Hi!

The boost adjustment should nearly always be at 0 – the app (if the sensors are available) will try to adjust for atmospherics itself in some cases.

The ‘preferred methods’ are the preferred methods for calculating the boost – MAP is the best as it’s simply direct from the MAP sensor (no calculation needed). MAF is used when MAP is not available (and uses engine displacement). Some BMWs may need to use MAF as the preferred method instead of MAP (if their engine has MAF) as the MAP sensor on OBD2 tops out before the engines max boost is reached in some instances.
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