I got worse mpg with the dry filter, put oem back in and mpg went back up.
Unless you drive WOT a lot, no real gain that I can see or feel.

 

I am going to move this post over to LD Ram - General Discussion.

 

I used a K&N in a 4.0 L Jeep that I had for many years. I did get a slight MPG increase (maybe 1-2 MPG). After several years of using it and having over 200,000 miles on the Jeep I decided to change the throttle body sensors just for S&G's (not having any problems). Although I did not have any problems, when I pulled the air cleaner tube off the throttle body I found the throttle body covered in oil from the spray treatment for the filter. Will I ever use one again, probably not. I was driving about 35,000 miles a year then so I might have seen a little savings from it.

 

They are not worth it, and may actually cause problems. Stick with the paper filters and replace at each oil change.

 

They offer zero gain and might cause problems as mikeru stated.

 

It's been proven over and over that the K&Ns allow more particles into the intake than the OEM paper filters. The tuning vendors say to stay with the OEM filters because they filter better than oil filters and the oil filters do not provide any performance benefits.

 

If ou want better filtration, while still getting maximum air flow,
get a EcoDeisel/6.4 Hemi lower air box

2014-2019 Ram Air Cleaner Body 68232657AC | All Mopar Parts

2014-2019 Ram part # 68232657AC - Air Cleaner Body

parts.allmoparparts.com

and inlet,

2014-2019 Ram Ambient Air Duct 68190706AB | All Mopar Parts

2014-2019 Ram part # 68190706AB - Ambient Air Duct

parts.allmoparparts.com

allowing for much greater air flow

or, if you want insane amount of air flow, do this mod.

Airbox Intake Tube Mod

I took out the airbox to see how the intake tube fits at the fender and noticed that it's a really cramped area. So I decided to add another inlet tube to the bottom of the airbox by attaching 3" aluminum flex pipe using a modified 3" PVC drain grate (cut out the grate). I drilled a 3" hole in...

www.ramforumz.com

using this hose, connected to the new 3 inch whole you just cut in the bottom of your stock Air Box,

Neoprene Single-Ply Air Duct Hose, 300F, Black Only | Pegasus Auto Racing Supplies

Our black neoprene aeroduct hose is designed for low-pressure air ducting applications such as cockpit cooling. It is wire-reinforced and rated to temperatures up to 300 F.

www.pegasusautoracing.com

to this scoop , mounted to teh side of your radiator,
forcing colder, outrside air into your air box, as you speed down the road.

Air Inlet, Extra-Small Rectangle, 6 x 3.5 inch, for 3" Hose | Pegasus Auto Racing Supplies

Our inlet ducts are wind tunnel tested for maximum air flow with minimal drag. These very small rectangular air inlets are easy to mount in the smallest air dam, bumper, or headlight opening.

www.pegasusautoracing.com

or, you can just buy a piece of crap K&M filter and feel good about doing something, to improve your performance that actually harms your truck and reduces its performance and life expectancy. Giving all those who have any knowledge of air filters, a chuckle out of your K&M Sitcker.

Up to you
.

 

Just looking for input on drop in air filters K&N or AFE ?? are they worth it ?

2015 Ram 5.7

I'm running S&B in my 2014, 2500 HD 5.7. Been in there about a year. It sounds amazing with all ports open and it definitely adds a little juice but the MPG definitely dropped a hair. Could be normal or could be because it's more fun to drive like you stole it when you can feel it vibrating the body panels and hear the hemi from a mile away. Factory exhaust and she's pretty nasty.