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Old 12-06-2006, 08:44 PM   #61
FuJi K
Scooby Guru
 
Member#: 3687
Join Date: Jan 2001
Chapter/Region: MWSOC
Location: St. Paul, MN
Vehicle:
MY99 GF4 JDM 6spd
NF Performance

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the '99-01 SOHC


The port runner on the 97-99 DOHC are D-style thus allowing some flow. The '96 DOHC have a BIG port entry of the old skool heads and flows more than the SOHC. The SOHC isn't as wide, but is taller than the '97-'99 DOHC.

The difference in the SOHC and the DOHC is that the power curve is different but peak power is the same. The SOHC has more torque in the lower revs to midrange. The DOHC has similer midrange but doesn't drop off as much as the SOHC as the rpms past 5000rpms.
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