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RarlyL8 RarlyL8 is offline
Crotchety Old Bastard
 
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Join Date: Jan 2000
Location: Huntsville, AL
Posts: 13,258
Garage
I know that you are familiar with CIS, which helps considerably when the odd issues arise. I've seen this "ghost" low AFR at idle on 930's before and had it on one of mine as well. I've never dialed into what exactly causes that phenomenon but do know that it is not a true representation and seemingly caused no harm. If you take away the gages and tune by ear then hook up the gages you can see some of these oddities. That is when I check my gages.
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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 07-24-2017, 04:50 AM
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