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Old 09-07-2006, 06:15 AM   #56
Scooby Specialist
Member#: 54052
Join Date: Feb 2004
Location: Auckland, NZ
2005 Spec C Type RA
WRC Blue


Let's not forget that the difference in USDM/EDM/JDM AVCS maps may be due to differences in the centerlines of the intake and exhaust cams between the various designations. For example, I had my JDM Spec C camshafts profiled and degree'd, and the intake centerline with 0 advance is 132 ATDC and exhaust centerline is 105 BTDC. I'll bet the USDM/EDM engines are less agressive than this, probably more like 120/113 for intake/exhaust. This of course would mean 0 degrees of advance on a JDM STI is likely more retarded than 0 degrees of advance on USDM/EDM.

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