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plenum

Fuel System

Model: 911 4s, Year:2002, Mileage:55,000, Type of use:Street use only
JoelI am considering upgrading to and IPD plenum for the increase in hp. As background the car has recently had the IMs solution,Air Oil Seperator, Muffler bypass mod., clutch, pressure plate , rms, water pump and thermosat.There seems to be two to choose from, the standard 74mm and the 82mm. Your thoughts, I of course prefer the 82mm. I do feel I know enough to go with the larger of the two.Vince Schaeffer

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