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Using an Actron Scanner to measure boost?

 
Old 03-08-2009, 11:55 AM
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222 S63 lowered, HMS Exhaust
Question Using an Actron Scanner to measure boost?

I recently purcashed an Actron Scanner Plus to diagnose codes on my other cars and watch the IAT temps etc on the Benz. How accurate should these things be when reading the MAP KPA readings?? You think they're pretty reliable readings?

The reason I ask, I saw 200+ MAP KPA readings on the scanner after some test runs- that's 29psi of boost. As far as I know the M275 AMG (V-12, twin turb) was limited to 22psi?
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Old 03-08-2009, 12:09 PM
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One must subtract ambient atmospheric pressure from that reading.
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Old 03-08-2009, 12:34 PM
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Ahhhh. 200 MAP KPA-30.00 (pressure) = 170KPA= approx 24psi. Does that sound legit?
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Old 03-08-2009, 12:48 PM
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200 kPa - 100 KPa (atmospheric pressure) = 100 Kpa = 1 bar or 14,5psi.
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Old 03-08-2009, 03:04 PM
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Originally Posted by AMG-Driver View Post
200 kPa - 100 KPa (atmospheric pressure) = 100 Kpa = 1 bar or 14,5psi.
Gotcha- thanks chief

That means my car saw a max boost of 18psi yesterday on the dyno
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Old 05-18-2017, 09:13 PM
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2007 Mercedes SL550, 2004 Jaguar X-Type, 2002 Suzuki Bandit 1200S, 2004 Ducati Monster
I just bought a Actron CP9670, and using it for the first time. It recognizes my car, 2007 Mercedes SL550, and the next page has a bunch of codes to choose from, like: (ME97)/ARMADA etc, (ME272)/ARMIN
Does anyone know what these mean and how to select the right one to choose?
Thanks,
Brian A.
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Old 05-18-2017, 11:14 PM
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Torque Pro in combination with an ELM 27 adapter (IIRC) will relay to you a lot of what the car has to say, all bundled up in a neat set of customizable gauges on your smart phone screen. Good stuff for a bit under $30 for the app and blutooth device.
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