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I have a 001 1973.5 WUR on my system. The CIS is not original to the block unfortunately.
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This is likely the problem. The -001 used a throttle position switch as it had no vacuum port. If the throttle switch is not functioning (there would be no provision for it in the '75 wire harness) then it cannot enrich the mixture on throttle. If you also have the '73.5 FD the system is inadequate to fuel a 3.0L engine.
Has this engine ever run properly with the current CIS system? I ask to see if something has malfunctioned or if it never functioned properly in the first place.
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RarlyL8 Motorsports / M&K Exhaust - 911/930 Exhaust Systems, Turbos, TiAL, CIS Mods/Rebuilds
'78 911SC Widebody, 930 engine, 915 Tranny, K27, SC Cams, RL8 Headers & GT3 Muffler. 350whp @ 0.75bar
Brian B. (256)536-9977 Service@MKExhaust Brian@RarlyL8
Last edited by RarlyL8; 08-31-2016 at 04:28 PM..
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