996Previous model naturally aspirated Porsche 911 community. Discuss C2, C2s, C4, C4s, Targa and Cabriolets. Sponsored by Spec Clutch
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The opening is bored out on both sides. I don't recall where I found it, but the ID is obviously larger. (May have been on a Boxter thread?) The flap is the same size (appears to me). The butterfly shaft also has extra metal shaved off. I assume the reduced mass allows for a faster reaction to the throttle inputs.
I bought mine about 3 weeks ago. As of then, RSS had not done any dyno testing on a 996.