Reply
 
Thread Tools Display Modes
Old 06-10-2015, 05:54 PM   #11
Tinkerer and Putterer
 
Join Date: Mar 2013
Posts: 334
I applaud those folks for running that filter test. It shows a possible why the manufacturers choose to continue using paper filters instead of switching to oiled filters. Well that and the fact that most users will not clean a filter... To play devils advocate I went looking for the best article arguing for an aftermarket air intake:

Dyno Test: 4 K&N vs. AEM 5th Gen Camaro Intake Options - LSXTV

You can see the affect of heat soak on the intake with the large aluminum pipe.

The camaro in question has exhaust manifolds that can support 500+ hp, and it seems to have a smaller stock air filter and a intake tube and as a result there were some impressive performance gains on the dyno using these perfectly clean filters. Even with this ideal setup please note the RPMs where the numbers start to pick up. You don't see the toted improvement until the engine exceeds 5000 RPMs, a level that most RVs will never see unless they are running the Chevy 6.0L. There is some improvement down around 3000 and 4000 RPM but not enough to feel the difference. On our rigs that are limited by the restrictive exhaust manifolds I question whether or not the observed improvement would be this dramatic. You can only move as much air as the pump allows and when you have a restrictive exhaust that will also limit the amount of air the engine can pull in. All of these things are connected so changing just one item will often not have as big of an affect as expected thanks to a bottleneck somewhere else in the pipe. To take full advantage of a performance intake you would want to swap the exhaust manifolds for headers and remap the computer to take advantage of the improved volumetric efficiency. Then you will see a marked improvement. However you will also see a pretty good dent in your wallet as well. This is the approach that Banks takes with its power pack and that bad boy will set you back 2000+!
__________________

__________________
HappyGuy is offline   Reply With Quote
Old 06-10-2015, 06:13 PM   #12
Senior Member
 
Join Date: Jul 2012
Location: Orange Texas
Posts: 608
Send a message via MSN to Tiggerdad
Quote:
The Moss agreement in the states overrides the manufacturer canceling out your warranty where as the manufacturer doesnt supply free air filters.
In would hate to have to challenge the auto makers over a filter. Not worth the effort to me. I wouldn't use it. That being said, I am a believer that the manufacturer knows best and I stick with OEM filters.
__________________

__________________

2013 Crusader 330 MKS
2013 Chevrolet Silverado LT 2500 D/A
Tiggerdad is offline   Reply With Quote
Old 06-10-2015, 07:16 PM   #13
Senior Member
 
Join Date: Jul 2012
Location: Orange Texas
Posts: 608
Send a message via MSN to Tiggerdad
OOPS_Double post
__________________

2013 Crusader 330 MKS
2013 Chevrolet Silverado LT 2500 D/A
Tiggerdad is offline   Reply With Quote
Old 06-10-2015, 07:49 PM   #14
Senior Member
 
tmhyer's Avatar
 
Join Date: Apr 2014
Posts: 299
My preference is OEM unless you have a race car
__________________
tmhyer is offline   Reply With Quote
Old 06-10-2015, 10:37 PM   #15
Left Coast
 
Join Date: Dec 2014
Location: vancouver,washington
Posts: 15,649
Send a message via Yahoo to bob caldwell
Dyno tests are done in an enclosed area.....and not in real situations.....Been around this for 55 years and just because it's in print, doesn't make it so.....believe every thing that's in a newspaper? I could real technical here, but I don't like to type that much.
__________________
bob caldwell is offline   Reply With Quote
Old 06-10-2015, 10:40 PM   #16
Senior Member
 
Join Date: Jan 2013
Posts: 162
Was getting @ 10-11 mpg towing with a 2010 Tundra. On a friend's advice I put in a K & N air filter and it dropped to 6-7 mpg. I thought about this and the only difference since my last trip was the K & N filter. Went to a parts store and bought a standard air filter and it went back to 10-11 mpg! Took it back where I bought it and got a full refund. Don't try it.
__________________
VMI'62
Edmund is offline   Reply With Quote
Old 06-10-2015, 10:54 PM   #17
Left Coast
 
Join Date: Dec 2014
Location: vancouver,washington
Posts: 15,649
Send a message via Yahoo to bob caldwell
Quote:
Originally Posted by Edmund View Post
Was getting @ 10-11 mpg towing with a 2010 Tundra. On a friend's advice I put in a K & N air filter and it dropped to 6-7 mpg. I thought about this and the only difference since my last trip was the K & N filter. Went to a parts store and bought a standard air filter and it went back to 10-11 mpg! Took it back where I bought it and got a full refund. Don't try it.
What you did was throw a/f ratio off and computor richened the system because of the oxygen sensor
__________________
bob caldwell is offline   Reply With Quote
Old 06-10-2015, 10:57 PM   #18
Senior Member
 
Join Date: Jan 2013
Posts: 162
Quote:
Originally Posted by bob caldwell View Post
What you did was throw a/f ratio off and computor richened the system because of the oxygen sensor
Whatever I did screwed things up. Using standard filters everything is fine.
__________________
VMI'62
Edmund is offline   Reply With Quote
Old 06-10-2015, 11:01 PM   #19
Senior Member
 
deartruc's Avatar
 
Join Date: Sep 2014
Location: Southern New England
Posts: 818
I installed the K&N FIPK on my Durango. I also did a 3" cat back exhaust with a 2 chamber muffler and Hy-pertech re-programmer (set for 89 octane). Yes without the exhaust and intake resonators it is pretty loud. Teenage son (who wears earbuds 24x7) complained when sitting in the 3rd row. Only a 2mpg daily driver increase. But, the grey grocery getter is now the silver streak.
__________________
2008 Dodge Durango
2015 Roo 23 ikss
deartruc is offline   Reply With Quote
Old 06-15-2015, 08:25 AM   #20
Senior Member
 
Join Date: Jun 2015
Location: Albuquerque
Posts: 338
K&N and Dust

I purchased on for my 05 Jeep Liberty diesel. The instructions said it wasn't suitable for dusty conditions. I live in NM, where it is always dusty. I never installed it.

I drove through a dust storm once that was so bad the check engine light came on. Had to stop and shake out the stock filter. Hard to do with an oil bath. That said, the sweet little Honda 2000 generator uses an oil bath in horrible conditions at Lake Powell, and runs like a champ.
__________________

__________________
mnoland30 is offline   Reply With Quote
Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off



» Virginia Campgrounds

Reviews provided by




ForestRiverForums.com is not in any way associated with Forest River, Inc. or its associated RV manufacturing divisions.


Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -5. The time now is 06:07 AM.