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Old 04-27-2001, 06:26 AM   #1
Scooby Newbie
Member#: 6141
Join Date: Apr 2001
Location: Columbia, South Carolina
Post Exhaust System Piping Diameters

I am the proud new owner of a 2001 Impreza RS . I got the car about 5 weeks ago and have 850 mles on the clock. The car is amazing. I have already been bitten by the aftermarket tuning bug and plan on installing the exhaust system from JC. I am not sure how the different piping diameters affect the performance of the car. Could someone let me know. Thanks. See you on the road.
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Old 04-27-2001, 07:01 AM   #2
Rich L
Scooby Specialist
Member#: 961
Join Date: Feb 2000
Chapter/Region: Tri-State
Location: near Atco(NJ) [email protected]
1999 RS-Tw/ CobraMAF
Custom Rallispec kit/IC#1


If your NA stick with 2.25"

Some people might ecourage you to use 2.5", but that woulnt be needed until your running over 240 hp or have some sort of forced induction.
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