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Old 11-01-2012, 09:39 AM   #29
gpshumway
Scooby Specialist
 
Member#: 43950
Join Date: Sep 2003
Chapter/Region: MWSOC
Location: Minneapolis, MN
Vehicle:
07 WRX LTD Wagon
Satin White Pearl

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I don't think "better" is the right word. The K24A2 has the potential to make more power because it has more displacement, not because it's inherently "better" than a K20A2 (RSX) or K20Z3 (8th Civic Si). The K24Z7 lost Vtec on the exhaust cam and gained an exhaust manifold integrated into the cylinder head (a-la R18) which prevents use of a proper header for exhaust pulse tuning. Both changes make the old K20Z3 inherently "better" as a performance engine.
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