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RarlyL8 RarlyL8 is offline
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Join Date: Jan 2000
Location: Huntsville, AL
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A modified USA fuel head can support ~425whp. The most I have heard of is ~450. Anything past 400whp takes a lot of tuning and modification. Adjustable WUR is mandatory.
The fuel pumps and injectors can support much more. The bottleneck is likely the air metering plate. The AFR see-saw of the WUR begins to degrade at the extreme ends of the operating range, off boost and redline. You get one or the other but may not have both.
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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 12-25-2009, 07:28 PM
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