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RarlyL8 RarlyL8 is offline
Crotchety Old Bastard
 
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Join Date: Jan 2000
Location: Huntsville, AL
Posts: 14,361
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The 6 port AFR setup is for just one purpose and that is to balance the AFR distribution. This is done at idle so there is no backpressure issue. If I do get interference I will simply remove the waste gates from each bank. Fuel distribution for each cylinder is affected by the asymmetrical intake manifold and must be compensated on the fuel end as you can't do anything about the air end (using that OEM manifold). This isn't typically a significant problem worth worrying about but does rob power by defaulting on the rich side to compensate for the lean cylinders.
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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 02-28-2017, 05:03 AM
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