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Actually a supercharger has a bypass regulator. this means that your RPM does not control when your s/c will boost, but in fact how much throttle your giving the car does. This means you can give boost off the line, or hold your foot off a bit and save the boost for a kick later. Normal around town driving your car should stay in the negative 10-5 lbs range.

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Q: What should the psi boost gauge read driving normal in a 2005 3.8 liter Chevy impala supersport and when should the supercharger kick in at what speed?
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