Thread: New baby on way
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x98boardwell x98boardwell is offline
After the next project
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Join Date: Sep 2006
Location: Central Valley, CA
Posts: 1,522

Just to chime in.... a rich mixture would make the car run cooler because of excess fuel. A lean mixture would be the cause of excess heat.

In the picture above it is common for those to heat up at the point where the collectors and exhaust come together when under full boost (WOT). I'm guessing this was simulating a dyno under a 3rd gear pull to initiate the boost and the heat you are seeing. The motor could have been lean here but I'm guessing with all of the toys he has on this motor (electrical) that they have their AFR's dialed in.

Hope this helps,
Previous cars:
2007 GT3, 2006 Cayenne TTS, 1991 928 S4, 1987 930, 1975 914 2.0, 1989 944 Turbo S, 1991 964 Targa, 1991 964 Convert, 2004 996TT Convertible, 550-6 Spyder with a 2.4 liter twin plug "S-spec'd motor"
Current cars: 2012 Cayenne TT, 1997 993TT, 1984 Jeep Grand Wagoneer, 94' 928 GTS, VW GTI
Old 05-14-2010, 05:11 PM
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