Thread: Odd AFR issue
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RarlyL8 RarlyL8 is online now
Crotchety Old Bastard
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Join Date: Jan 2000
Location: Huntsville, AL
Posts: 13,554
Mark, if your WUR is healthy in areas other than cold/hot start you will see a cruising AFR (steady throttle with engine in vacuum) of ~14.5:1 independent of the 13.5:1 at idle. 3%CO w/no Lambda is best for performance.
If it is degrading I can rebuild your WUR to stock specs if you want to use your spare for now. The 153 model may be what Dave is referring to. The 054 and 112 are slightly different and a bit older. All will work or can be made adjustable so they work with any 930.
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 04-06-2010, 09:32 AM
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