Haven't had it on long 3 tanks of gas but I picked up 2.1 mpg and a slight difference in acceleration. Haven't pulled with it yet but I'm optimistic. Easy install 20-30 minutes in my drive. Looks good too. You can hear the air flow difference which I also like. I was leery of the claims but so far it does what that said it would. I would recommend it.
Best bang for your buck
I bought this CAI to help with power and fuel economy after doing a lift and mud tires I missed the power and the bad mpg didn't help. I did not expect this CAI to be this good! It gave me very noticeable power and better throttle response, also it made my exhaust deeper and louder. Gas mileage has improved but can not give a number I have been having to much fun hitting the gas! I do recommend!!! do not be fooled about the price it is great quality.