IMHO the CAI isn't worth it. A tune would be biggest gain, and as long as your exhaust isn't restricted no real need to change that until needed. Keep tires at optimal pressure and drive as you already do (no jackrabbit starts/stops). I would rank exhaust behind tune but ahead of cai for improvements.
Glad to hear the gas buddy app helped out.
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2008 Silverado K3500HD dually CCLB (LMM)
2005 Silverado K2500HD ECLB LT (LLY) (SOLD)
2003 Silverado 2500HD ECSB 6.0l/4L80e
2000 Pontiac Grand Am GT
Member #1063 3500 Dually Club
Last edited by TiredFarmer; 09-01-2013 at 07:27 PM.