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Old 11-03-2014, 06:22 PM   #1
JAAY
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Join Date: Dec 2006
Location: shoreham, ny
Posts: 1,619
Safe afr's and timing ?

My car is a 3.4. I am running 12.8-13.0 afr and 22degrees of timing above 6krpm. What is safe and what is normal and what is the best performance. Thanks in advance.
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996 3.4 engine with 2.7 986 5speed transmission
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