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CIS modification ?
Is it worth the time and money to enlarge (line bore) the inside diameter of the throttle body on the '79 CIS. If I remember correctly one can only gain 3 mm. This fuel mgt. is on a '89 3.2 w/no air or cat.convert.
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PCA N'al DE Instructor~Carolina Region '74 Targa grd.-up restoration w/89 3.2, '87 951,1.8 T. Beetle Silverado haularound/DE trailer, 356 Speedster-fourcam '48 MG TC. Karman Ghia w/flatsix Many, many others, 2 & 4 wheel, gone but not forgotten |
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02-20-2006, 09:10 AM
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i'm going to say minimal if any gain..just not much more significant gains to be made with cis. it wouldn't be worth my money.
ryan
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To the memory of Warren Hall (Early S Man), 1950 - 2008 www.friendsofwarren.com 1990 964 C4 Cabriolet (current) 1974 911 2.7 Coupe w/sunroof 9114102267 (sold) 1974 914 2.0 (sold) |
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02-20-2006, 09:18 AM
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Metal Guru
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S-Car-Go will bore the throttle body, air sensor body and re-calibrate the WUR for $1K but it makes more sense to buy a Tbitz kit and have infinite adjustability.
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Paul B. '91 964 3.3 Turbo Port matched, SC cams, K27/K29 turbo, Roush Performance custom headers w/Tial MV-S dual wastegates, Rarlyl8 muffler, LWFW, GT2 clutch & PP, BL wur, factory RS shifter, RS mounts, FVD timing mod, Big Reds, H&R Coilovers, ESB spring plates- 210 lb |
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02-20-2006, 09:42 AM
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Current girfriend
1974 Porsche 911 2.7
1991 Porsche 964 Turbo
