Quote:
Originally Posted by Boss330
It's pretty easy to calculate HP based on all the data available. You can make a rough calculation just based on airflow alone. For instance a airflow of 150g/s equals roughly 150kW or 204Hp.
And then you can adjust for intake temperature, atmospheric pressure, boost pressure, fuel injected etc, etc. There has been apps for your phone that, together with an OBD plug and Bluetooth, has done the same for a few years...
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I have to assume it is based on an algorithm that would only work on a stock car. Or would it still accurately give HP reading if the ECU is tuned to increase HP over stock, new intake, new exhaust or larger turbos are installed?