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RarlyL8 RarlyL8 is offline
Crotchety Old Bastard
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Join Date: Jan 2000
Location: Huntsville, AL
Posts: 13,562
I'd be interested in knowing what your symptoms are and what Casey decides on a fix. The '76/7 WUR is unique and cannot (that I am aware) be modified in the same way as the later model WURs. I assume if your car is stockish he will simply replace the WUR. What I have found, and the reason my car is on the lift right now, is that adding headers changes the AFRs enough that an adjustable unit is needed if you want the numbers to be where the should for optimum performance. I'd say the vast majority of owners don't do this and are leaving fuel mileage, power and driveability on the table.
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 10-20-2009, 05:53 AM
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