SmittysRam

I have seen many posts about different types of Air Filters and kits you can put on these trucks.

Why do so many people not like the K&N style over paper filters? Would a oil less style like the K&N be better for more air?

Thoughts....


Smitty

IPDiesel

K&N flow more & are less restrictive but do not filter out the fine particles as well as paper.

The fine particles have been known to dust the engine ( allow enought silica into to the turbo & intake to destroy an engine. )

wellmax

i have a 2005 model, old man had a k&N air filter in the truck when i got it. 41K miles.

I took it out and bought a new dealership filter, 4" I think its a much better filter, just concerned about (more air flow, more dirt flow)
did lose about 1 mpg so you can tell i am not getting as much air flow.

just wanted to protect the big guy, he likes clean fuel and clean air.

have a good day,

madhat

I tell you what, I still have the stock air box with a 4" hole in the bottom with some PVC routing the air from the front, and I recently switched from my Airaid back to the stock Dodge paper filter... they have improved them a good bit, and I have not had any problems with them since I put it in.

MikeyB

Wix also has the new style high capacity 4" paper filter available, p/n 49946

MikeyB

surfram

Go with the Napa Gold/ Wix 4496:

AH64ID

Oiled filters are too easy to improperly service and do turbo/engine damage, even when properly serviced they can do damage.

The OEM 4" filter flows a TON of air, filters as good, or better, than anything else and is well priced with a good service life.

In the sub 450 rwhp range there isn't anything better than the stock setup, and with a few mods it can be a real performer.

Air Filter: Run the OEM 4” Pleat filter, PN 53034249AA

Airaid MIT: Better throttle response, quicker turbo spool, better sound

GDP Intake Horn: Better throttle response, quicker turbo spool, lower intake air temps.

Home Depot CAI: Cooler intake air, better flow at high boost

If you have an 04.5-07 be sure to leave the directional vanes in the lower 90* intake elbow, they don’t effect flow and Holset claims they help the turbo operate up to 30% more efficient. If you have an 03-04 try to find an 04.5-07 lower intake elbow.

All of these mods cost less than a standard CAI, and will out perform them. My IAT
s are 6-12* over ambient under normal cruise with those mods, where stock they were 10-20*.

SmittysRam

Great info guys, keep it coming.


Smitty

rammv

Don't forget *****'s whistler good intake to build yourself

AH64ID

Based on the underhood temps I saw at the area where that filter would pull air from it would do nothing for performance and most likely increase EGT's, just make the turbo louder.. I guess it depends on what you want.

Lost Lake

Running with no filter at all on a dyno shows no power increase, so I don't think airflow is the issue unless you are building huge horsepower.
I run a stock filter and my silicon levels are below 2.

SmittysRam

My goal isnt big numbers on the dyno, just want effeciency improvements. Keep the ideas coming guys.

Thanks,

Smitty

AH64ID

That's my same goal, I tend to over research things and all of my mods are about efficiency and reliability.

The added power is a benefit.. a VERY nice one!

PoorMansCat

I think its been proven many times that unless you are heavily modified, there is no power/mpg gain with one of the popular aftermarket filters.
I run the plain old Fleetguard filter with the foam pre-filter in the stock air box.
Only thing I see is that even after changing the filter, if I have to get in it pretty hard, the filter minder pulls deep into the yellow. I jsut choose not to look at the filter minder anymore!!..

AH64ID

Agreed. I have been involved in the dyno that showed that up thru 430 rwhp (corr) there was no power gain from a stock setup (amsoil filter, that flows less than stock actually) to an AFE Stage II.

Try the new Mopar 4", its a much better flowing and filtering filter than the 2" Fleetguard.