Bigger Ic = Less Boost?
#5
Originally Posted by R45' date='Apr 28 2004, 12:59 AM
yes there will be increase in lag. The larger IC takes longer to fill and get to presure.
From Maximum Boost by Corky Bell
"A reasonable judgement of the volume's relationship to lag can be made by dividing the internal volume by the flow rate through the system at the RPM at which the throttle is appled and multiplying by 2. (The factor fo 2 results from the approximate doubling of airflow through the system when going from cruise to boost.) The approximate lag time is gien by
Time = (V/Flow rate) x2"
For his example he uses an intake volume of 500 in^3 and a flow rate of 150 cfm, which after the unit conversions and math comes out to .23 seconds.
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