Net-Moto :: Community :: Racing :: Thefts :: Racing Videos Sponsor :: Contact
 Forums   Features   Trackdays   Net-Moto   Race Team   CMSP Training   Sponsors   BARF Store   Donate   Terms of Service 
BARF - Bay Area Riders Forum  Home   UserCP   Register   Calendar   Members   FAQ   Search  AMA

Go Back   BARF - Bay Area Riders Forum > Club House > Reviews & Recommendations


Reply
 
Thread Tools Display Modes
Old 05-15-2018, 08:09 AM   #31
JesasaurusRex
Veteran
 
JesasaurusRex's Avatar
 
Contributor ++++

Join Date: Feb 2004
Location: Kens Moms House
Motorcycles: Are Gay
Name: Rex
Quote:
Originally Posted by dravnx View Post
How much does anyone really save by using K&N filters? In the grand scheme of things, it's a couple of cups of coffee.
honestly i'd like to see back to back dyno runs on a factory ANYTHING, from just an air filter swap. I bet the gains are close to nil.

Nobody buys a KN for the $ savings. Sure you MIGHT save on the filters if enough time/miles go by but the charging and cleaning oils aren't super cheap. I doubt there's any real world cost savings either.

They're pretty much a gimic for anyone who doesn't have a heavily modified vehicle.
__________________
RedAnt - "Wonder if her other video shows her picking up sockets with her taco."

soliqsoliq - "Miatas can be cool I like to think of my bike as the Miata of motorcycles--underpowered and often considered a chick's vehicle..."
JesasaurusRex is offline   Reply With Quote
Old 05-15-2018, 08:25 AM   #32
kuksul08
Veteran
 
kuksul08's Avatar
 

Join Date: Mar 2014
Location: South Bay
Motorcycles: Various Connies
Name:
Yeah, cleaning K&N filters can make them last longer, but even when new they aren't worth using. The only filters you should clean are the oiled foam ones commonly found in dirtbikes.

Those of you with street bikes, check out rock auto for filters. Cross reference the manufacturer's part number. I found some there for a fraction of the cost, even less than amazon. You could probably buy 3-4 for the price of one K&N. Change it out every 10-15k miles of normal use, and it's gonna last you a long time.
kuksul08 is offline   Reply With Quote
Old 05-15-2018, 08:37 AM   #33
Johndicezx9
Rolls with it...
 
Johndicezx9's Avatar
 
Contributor ++

Join Date: Aug 2003
Location: Monterey Pen
Motorcycles: :o)
Name: John
I still like the K&N Filter Cleaner, it's great for degreasing chains and gunk, and gentle on the other stuff.
__________________
"I used to be 'with it', but then they changed what 'it' was. Now what I'm with isn't 'it', and what's 'it' seems weird and scary. It'll happen to you!"
Johndicezx9 is offline   Reply With Quote
Old 05-15-2018, 08:46 AM   #34
EastBayDave
- Kawasaki Fanatic -
 
EastBayDave's Avatar
 
Founding Member
From the heart

Join Date: May 2002
Location: San Lorenzo, CA "The Mudflats"
Motorcycles: ZRX1200
Name: "Dave"
BMC makes some nice air filters too. Made a "feelable" difference in HP on the ZX12R w/no other changes....
__________________
Enjoy the ride!
EastBayDave is offline   Reply With Quote
Old 05-15-2018, 09:54 AM   #35
ratsblast
Veteran
 
ratsblast's Avatar
 

Join Date: Sep 2013
Location: Belmont
Motorcycles: Buell BeLast, steal it, I dare you! 1997 1200xlh
Name: Daryn
Good to know, the Hardley has a k&n on it of unknown provenance. Just cleaned and reoiled it before I took the bike apart. Dont recall it being particularly dirty behind the filter.
ratsblast is offline   Reply With Quote
Old 05-15-2018, 10:06 AM   #36
LakeMerrit
Veteran
 
LakeMerrit's Avatar
 
Contributor + 3%

Join Date: Sep 2015
Location: Oakland
Motorcycles: '14 Dorsoduro 750 ABS
Name:
Meh I run stock paper on the bikes, but have a K&N filter and warm air intake on my car. Way better turbo whooshy sounds from the diverter valve, definite power loss around town from the warm air intake (but who cares, the turbo whooshy sounds are better than horsepower anyways)
__________________
The best part of a cucumber tastes just like the worst part of a watermelon
LakeMerrit is offline   Reply With Quote
Old 05-15-2018, 10:46 AM   #37
Reli
Veteran
 
Reli's Avatar
 
Contributor +++

Join Date: Mar 2010
Location: land of milfs and range rovers (danville)
Motorcycles: motorcycles
Name: reli
When I first started riding I had a guy try to sell me a Ninja 250 that he claimed had been bored out to 290 or 300 or something. Went to take a look, and this idiot wasn't running any filter at all. Claimed it wasn't really necessary, but that he could "put it back on if I really wanted it". This, for a guy who lived in east county san diego which is basically a desert.
Reli is offline   Reply With Quote
Old 05-15-2018, 10:54 AM   #38
LakeMerrit
Veteran
 
LakeMerrit's Avatar
 
Contributor + 3%

Join Date: Sep 2015
Location: Oakland
Motorcycles: '14 Dorsoduro 750 ABS
Name:
Quote:
Originally Posted by Reli View Post
When I first started riding I had a guy try to sell me a Ninja 250 that he claimed had been bored out to 290 or 300 or something. Went to take a look, and this idiot wasn't running any filter at all. Claimed it wasn't really necessary, but that he could "put it back on if I really wanted it". This, for a guy who lived in east county san diego which is basically a desert.
Par for the course in El Cabron Cajon
__________________
The best part of a cucumber tastes just like the worst part of a watermelon
LakeMerrit is offline   Reply With Quote
Old 05-15-2018, 11:01 AM   #39
SuperMotoD
Veteran
 
SuperMotoD's Avatar
 

Join Date: Apr 2015
Location: brentwood
Motorcycles: S1000XR ,990 SMR , R1, 950 SMR , KTM 625 SMR sold
Name: Darrell
I've been using Sprint filters with no problems for years, K&N are over rated.

http://www.sprintfilter.net/en/bike/whysfs

Last edited by SuperMotoD; 05-15-2018 at 04:10 PM..
SuperMotoD is offline   Reply With Quote
Old 05-15-2018, 01:59 PM   #40
NeverSayDie
Veteran
 
NeverSayDie's Avatar
 

Join Date: Aug 2006
Location: Bay Area
Motorcycles: One Big Yam
Name:
The paper OEM filter is expensive in the long term but filters better, the K&N is cheaper in the long run but doesn't really filter anything.

Is there a happy medium between the two?
NeverSayDie is offline   Reply With Quote
Old 05-15-2018, 07:17 PM   #41
kuksul08
Veteran
 
kuksul08's Avatar
 

Join Date: Mar 2014
Location: South Bay
Motorcycles: Various Connies
Name:
Quote:
Originally Posted by NeverSayDie View Post
The paper OEM filter is expensive in the long term but filters better, the K&N is cheaper in the long run but doesn't really filter anything.

Is there a happy medium between the two?
OEM paper filters is the happy everything.
kuksul08 is offline   Reply With Quote
Old 05-17-2018, 09:12 AM   #42
CDONA
Home of Vortex tuning
 
CDONA's Avatar
 

Join Date: Jul 2010
Location: Based in Spearfish SD. rolled over there >
Motorcycles: Triumph scrambler, TW200
Name: # 44659
Right up until you drop it in a creek crossing and soak that paper.
Then tear out the soggy pulp to get it to run again.
__________________
"Chip Tank" in Flagstaff Az.

Started hammerin' Honda 90's around Berryessa, Summer of Love '67
CDONA is offline   Reply With Quote
Old 05-17-2018, 10:00 AM   #43
zixaq
Veteran
 
zixaq's Avatar
 

Join Date: Oct 2015
Location: San Francisco
Motorcycles: FZ6
Name: Scott
K&N air filters are definitely on my list of stuff I hate seeing in a motorcycle ad.

"Hey, I ruined my bike with a bunch of stupid mods, you should pay me EXTRA for it!!!1!"
zixaq is offline   Reply With Quote
Old 05-17-2018, 11:02 AM   #44
Rumbo Sur
learning everyday
 
Rumbo Sur's Avatar
 
1% Contributor

Join Date: Jul 2009
Location: San Rafael, CA
Motorcycles: DR650, Ducati HyperStrada, .
Name: Patrick
Quote:
Originally Posted by CDONA View Post
Right up until you drop it in a creek crossing and soak that paper.
Then tear out the soggy pulp to get it to run again.
Or the guy who attempts to "Wash" his paper air filter.

On former Vstrom my paper filters got really filled up from riding Baja behind a few other bikes. Only thing I would do was bang them on something to loosen up the dirt ... you can try to vacuum them too ... but a no go in Baja.

Result was quite a bit of DIRT inside my throttle bodies. I cleaned it all up once home and that Vstrom never seemed the worse for wear! (90K miles)

One thing I did to help keep dirt out on that bike was to run a thin bead of grease along the filter's sealing edge. It worked! No more dirt in throttle bodies!

That is a common technique on dirt bikes with foam filters to ensure no dirt gets around the filter at the sealing edges.

Last edited by Rumbo Sur; 05-17-2018 at 11:04 AM..
Rumbo Sur is offline   Reply With Quote
Old 05-18-2018, 12:31 PM   #45
bigbadandugly
Bay Area noob
 

Join Date: Jun 2013
Location: Walnut Creek, CA
Motorcycles: BMW R1200GS
Name:
Quote:
Originally Posted by JesasaurusRex View Post
honestly i'd like to see back to back dyno runs on a factory ANYTHING, from just an air filter swap. I bet the gains are close to nil.
I did some significant dynotuning with my R1200GS in 2012 in a variety of configurations, including using a BMC reusable filter similar in function to the K&N one (I say similar in function as I'm not sure if the design of the BMC is better or worse than the K&N).

With the BMC filter, the two runs I did with it were about 5 hp lower than the better runs, so I concluded that at best the high cost filter provided no benefit, and at worst it had a negative contribution.

The testing was hardly scientifically rigorous, but I satisfied myself that the "high flow" air filters do little for performance.

Here's the link to my write-up.

Cory
bigbadandugly 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

Forum Jump


All times are GMT -8. The time now is 12:02 AM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2018, vBulletin Solutions, Inc.