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So i was told by a mechanic that my car is running lean and that it could be the JLT CAI or the tune..... any one else run into this??
 

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Check your tune. If you use a CAI without tune it will cause a higher air mixture to fuel ratio (hence the term running "lean"). I suggest returning your car to stock with your tuner and then reflashing to the tune you want. This makes sure you start from a clean flash instead of reflashing a bad tune. You must do this soon. Running lean is bad for your engine.
 

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2008crna said:
Check your tune. If you use a CAI without tune it will cause a higher air mixture to fuel ratio (hence the term running "lean"). I suggest returning your car to stock with your tuner and then reflashing to the tune you want. This makes sure you start from a clean flash instead of reflashing a bad tune. You must do this soon. Running lean is bad for your engine.
+1

And if you have the option, send in any data logs to whoever does your tune and have them update it. This is popular with the 2011+ guys that have Bama tunes
 
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