Just installed my K&N CAI 77 Series. I like it, noticeable throttle response gain, and nice sound when 'gunning' it.

 

I was wanting to install the same thing. WHy the 77 series? Is it for the Dodge HEMI? I was hoping for increased response with better gas mileage, will that happen?

 

Well they hav ea 57 Series also for the Hemi. I'm not sure what all the differences are though if really any.

I have noticed an increase in throttle response from the seat of my pants observation. Haven't had it on long enough to tell if there is a mpg increase just yet.

 

where did you buy it from? How much?