Hi
Original factory chokes for a 2 liter, 911T engine are 27mm.
Would suggest you don't go any bigger than the 30mm ones you have .
See link below for more info.
Cheers
https://forums.pelicanparts.com/porsche-911-technical-forum/989063-weber-pmo-throttle-venturi-sizing-equations.html
Last edited by Magyar Kiwi; 06-22-2025 at 04:56 PM..
Reason: Clarity
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