Quote:
Originally posted by scottycboy
What happens next? The wastegate will try to maintane the same air pressure as before, and increase boost pressure again to 15 psi. Since the wastegate is only controlled by pressure the engine will be ingesting more air than without the intercooler.
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The turbo gets its pressure signal from the compressor housing. 15psi is the same at the turbo no matter if an intercooler is installed or not. This is why when a pressure drop happens across an intercooler the turbo wastegate must be adjusted to compensate. Installing the signal line after the intercooler can lead to a surge (Too much boost).