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PCA Member since 1988
Join Date: Feb 2018
Location: SW Washington State
Posts: 4,678
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Correction to some other posts: a twin-plug system allows LESS timing advance. Because it burns the fuel faster, less advance is required to burn the fuel by the time the piston gets slightly past TDC. Less advance reduces lost power pushing the piston up against combustion pressure, and saves fuel. It also allows more compression to be used. Compare the CRs of the 963/993 engines to the previous versions.
Is it worth it? Your wallet, you decide. It's always easy to spend other people's money...
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1973.5 911T with RoW 1980 SC CIS stroked to 3.2, 10:1 Mahle Sport p/c's, TBC exhaust ports, M1 cams, SSI's. RSR bushings & adj spring plates, Koni Sports, 21/26mm T-bars, stock swaybars, 16x7 Fuchs w Michelin Pilot Sport A/S 3+, 205/55-16 at all 4 corners.
Cars are for driving. If you want art, get something you can hang on the wall!
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