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RarlyL8 RarlyL8 is offline
Crotchety Old Bastard
 
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Join Date: Jan 2000
Location: Huntsville, AL
Posts: 13,460
Garage
Idle AFR should be 13.0-13.5, cruise should be 14.5-14.8 (target). If idle is at 14.7 cruise will likely be too lean. Each engine has a sweet spot for idle AFR, I tune to that sweet spot and let cruise fall where it falls as this isn't my long distance vacation car so better running engine trumps optimal fuel mileage.
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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
Old 05-14-2018, 05:05 AM
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