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RarlyL8 RarlyL8 is offline
Crotchety Old Bastard
 
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Join Date: Jan 2000
Location: Huntsville, AL
Posts: 13,550
Garage
Nothing was changed but the headers. The existing Euro system was in excellent condition with no leaks. The new ones have all new hardware and I've detected no leakes. There is no O2 sensor or smog equipment of any kind on my engine.
The headers were responsible for the change in idle mixture. Don't know why myself as I did not expect the change to be significant. These headers are obvioulsy vastly different in design than the J-pipe configuration that was replaced, we do know that much. You can hear the pulses hit the turbo at low idle like a cammed engine.
Don I would think you should hear this cammed sound with your headers as well. Have you not experienced this?
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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 01-15-2010, 06:03 PM
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