Thread: Do CAI really make a big difference on the 06 5.4 engines
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Old Thu, January 19th, 2012, 05:01 PM
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Longshot270 Longshot270 is offline
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The commercial CAIs are actually worse for the truck. They cause a lean condition compared to stock that requires custom tunes to fix. Then there is a performance compromise by adjusting the custom tuning to not make a loud drone noise.

Just stick with the gotts.
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