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Registered
Join Date: Jan 2004
Location: Northern Virginia
Posts: 3,347
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I thought there was a factory upgrade for the C4.. maybe the X74 kit? Its a sportier than stock unit but, imho, likely a better choice than the PSS9/10 system out there.
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1970 914-6
Past:
2000 Boxster 2.7, 1987 944, 1987 924S
1978 911SC, 1976 914 2.0, 1970 914 w/2056
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