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Old 05-05-2012, 08:46 AM
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twobjshelbys twobjshelbys is offline
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Join Date: Jan 2009
Location: Las Vegas, NV
Cobra Make, Engine: Shelby CSX4005LA, Roush 427IR
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Quote:
Originally Posted by sspano01 View Post
i put my oxygen sensor too far from the engine and its EFI was forcing it to run rich. I moved the oxygen sensor to within 6 inches and it is only one one tube of the header. That really fixed the performance and the 'gas fume' effect is much much less

Check the location of your O2 sensor and/or maybe replace it
Pay attention to this - this was one of the fixes done on mine. You only get a reading from one cylinder instead of the average of 4 on one side but the closer location and better heat, and the fact that the sensor is properly upright instead of horizontal makes a big difference. Not all with this setup but it is one part.
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