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RarlyL8 RarlyL8 is offline
Crotchety Old Bastard
 
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Join Date: Jan 2000
Location: Huntsville, AL
Posts: 13,255
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Am I reading correctly that this engine sees 1.35bar @4000rpm with a 12.9:1 AFR?

What is your engine setup?

Obviously this is a problem. That huge black cloud behind you at 2500rpm is killing power, mileage, and washing your cyliders. So yes, you need to make your WUR adjustable and fix all of the parameters - cruise, threshold, and boost.
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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 03-30-2008, 10:35 AM
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