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You don't have a problem. The AFR will creep from the mid-13's when cool to low 14's when fully warm. As the engine fully warms the bimetalic strip in the WUR will lean out the mixture. Optimum cruising mixure is in the low 14's. At idle it will pop back down to mid-13's.
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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
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