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Re: Extra HP in cold weather?
Posted by Dean (more from Dean) on Fri, 21 Jan 2005 20:28:19
In Reply to: Re: Extra HP in cold weather?, LesH, Fri, 21 Jan 2005 16:34:01
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ECU does not regulate HP, it regulates charge air per combusion cycle. In cold air, the turbo works better and takes less turbine shaft power, this reduces the exhaust manifold back pressure, which can be around 30 PSI, and that allows for more torque from the same combustion air flow. Engine is also more efficient with lower temps.
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