Hrmm... dunno about WRXs, but Im pretty sure GTRs do a similar thing. When your giving it grief, basically it ups the voltage and pumps a higher volume of fuel, but say, when at idle, the voltage drops and pumps less fuel.

Not sure if its the same on the WRXs though as I said.....but maybe they do the same?

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I don't mind coming to work, but that eight hour wait to go home is just bullshit....