Home  |  Forums  |  914 Info  |  Blogs
 
914World.com - The fastest growing online 914 community!
 
Porsche, and the Porsche crest are registered trademarks of Dr. Ing. h.c. F. Porsche AG. This site is not affiliated with Porsche in any way.
Its only purpose is to provide an online forum for car enthusiasts. All other trademarks are property of their respective owners.
 

Welcome Guest ( Log In | Register )

> K&N air filter assembly, Whats the consensus?
Jon H.
post Jan 22 2014, 07:11 PM
Post #1


Member
**

Group: Members
Posts: 237
Joined: 1-July 11
From: Ottawa, Canada
Member No.: 13,264
Region Association: Canada
Will these affect the performance of a stock FI 2.0L engine negatively in any way?

Regards'

Jon

Attached Image
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
 
 Reply to this topicStart new topic
Replies(1 - 10)
Elliot Cannon
post Jan 22 2014, 07:13 PM
Post #2


914 Guru
*****

Group: Retired Members
Posts: 8,487
Joined: 29-December 06
From: Paso Robles Ca. (Central coast)
Member No.: 7,407
Region Association: None
K&N. One of Capn' Krustys' faves. (IMG:style_emoticons/default/av-943.gif)
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
Jon H.
post Jan 22 2014, 07:44 PM
Post #3


Member
**

Group: Members
Posts: 237
Joined: 1-July 11
From: Ottawa, Canada
Member No.: 13,264
Region Association: Canada
QUOTE(Elliot Cannon @ Jan 22 2014, 05:13 PM) *

K&N. One of Capn' Krustys' faves. (IMG:style_emoticons/default/av-943.gif)

Yeah I know the K&N battle, but does anybody run these things? I'm more or less questioning the vacuum line hook ups and vacuum effecting FI performance. Not so much if K&N is a good air filter.

Jon
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
Elliot Cannon
post Jan 22 2014, 08:36 PM
Post #4


914 Guru
*****

Group: Retired Members
Posts: 8,487
Joined: 29-December 06
From: Paso Robles Ca. (Central coast)
Member No.: 7,407
Region Association: None
QUOTE(Jon H. @ Jan 22 2014, 05:44 PM) *

QUOTE(Elliot Cannon @ Jan 22 2014, 05:13 PM) *

K&N. One of Capn' Krustys' faves. (IMG:style_emoticons/default/av-943.gif)

Yeah I know the K&N battle, but does anybody run these things? I'm more or less questioning the vacuum line hook ups and vacuum effecting FI performance. Not so much if K&N is a good air filter.

Jon

I used them on my 3.2 (yellow zonker) and I use them on my other car with Webers. Work fine for me. I'm sure others will disagree. But then again, I use high temp silicone to seal and secure my push rod tubes so what the hell do I know? (IMG:style_emoticons/default/av-943.gif)
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
Woody
post Jan 22 2014, 09:15 PM
Post #5


Sandbox Rabblerouser and head toilet scrubber
****

Group: Members
Posts: 3,858
Joined: 28-December 10
From: San Antonio Texas
Member No.: 12,530
Region Association: Southwest Region
The only time I would use a K&N is when a paper filter won't fit an application. K&Ns allow bunches more air in but only because they filter less which also means they let in trash. If a K&N is your only option make sure you clean it regularly and keep it oiled. If its on a newer car that runs a MAF sensor a K&N will trash it in short order.
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
3d914
post Jan 22 2014, 10:09 PM
Post #6


Senior Member
***

Group: Members
Posts: 1,275
Joined: 24-September 03
From: Benson, AZ
Member No.: 1,191
Region Association: Southwest Region
QUOTE(Jon H. @ Jan 22 2014, 06:44 PM) *

QUOTE(Elliot Cannon @ Jan 22 2014, 05:13 PM) *

K&N. One of Capn' Krustys' faves. (IMG:style_emoticons/default/av-943.gif)

Yeah I know the K&N battle, but does anybody run these things? I'm more or less questioning the vacuum line hook ups and vacuum effecting FI performance. Not so much if K&N is a good air filter.

Jon


Jon,

Any of the lines forward of the throttle body are not vacuum - they're open to atmosphere. They should not affect FI performance. The only lines that can are those after the throttle valve.
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
boxsterfan
post Jan 22 2014, 10:33 PM
Post #7


914's are kewl
***

Group: Members
Posts: 1,776
Joined: 6-June 03
From: San Ramon, CA
Member No.: 791
Region Association: Northern California
Aahhhh, the age old question of getting better air intake into the 914 engine.

I always wonder if you could get air piped in all the way from the front of the car.
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
MATTYLITE
post Jan 22 2014, 10:49 PM
Post #8


Member
**

Group: Members
Posts: 98
Joined: 23-August 12
From: California
Member No.: 14,843
Region Association: Southern California
We built a single intake system, and a dual intake system (pictured) for this application. This system has been proven on the track with multiple Porsche Owners Club class wins and perfect for the street as well.

(IMG:http://www.914world.com/bbs2/uploads_offsite/imagizer.imageshack.us-14843-1390452573.1.jpg)
(IMG:http://www.914world.com/bbs2/uploads_offsite/imagizer.imageshack.us-14843-1390452573.2.jpg)
(IMG:http://www.914world.com/bbs2/uploads_offsite/imagizer.imageshack.us-14843-1390452573.3.jpg)
(IMG:http://www.914world.com/bbs2/uploads_offsite/imagizer.imageshack.us-14843-1390452573.4.jpg)
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
Dave_Darling
post Jan 23 2014, 10:07 AM
Post #9


914 Idiot
**********

Group: Members
Posts: 14,991
Joined: 9-January 03
From: Silicon Valley / Kailua-Kona
Member No.: 121
Region Association: Northern California
QUOTE(Jon H. @ Jan 22 2014, 05:44 PM) *
I'm more or less questioning the vacuum line hook ups and vacuum effecting FI performance.


The FI doesn't really care exactly where its lines are hooked up. It just needs specific hoses to either be hooked to manifold vacuum, or to ambient-pressure (filtered) air. So as long as you hook up the hoses that used to go to the air cleaner to something "upstream" of the throttle body, you're fine.

(The exceptions to only manifold vacuum or ambient air are the lines from the throttle body to the distributor dashpot. But those don't enter into this discussion anyway.)

--DD
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
Socalandy
post Jan 23 2014, 11:01 AM
Post #10


Its got to be Yellow!!!
****

Group: Members
Posts: 2,432
Joined: 29-August 09
From: Orange
Member No.: 10,742
Region Association: Southern California
I ran K&N's on my 72 with 44 Webers and had a lot of issues with clogged idle jets so I added the K&N pre-chargers and that solved my issues. I'm going the same route for my -6


Attached thumbnail(s)
Attached Image Attached Image
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
Jon H.
post Jan 23 2014, 01:12 PM
Post #11


Member
**

Group: Members
Posts: 237
Joined: 1-July 11
From: Ottawa, Canada
Member No.: 13,264
Region Association: Canada
Thanks for the replies. Not sure though if I will make the purchase. After all, it really only looks better then the OEM filter housing.

Jon
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
« Next Oldest · 914World Garage · Next Newest »
 

Reply to this topicStart new topic
1 User(s) are reading this topic (1 Guests and 0 Anonymous Users)
0 Members:

 

Display Mode: Switch to: Standard · Linear+ · Switch to: Outline

Track this topic · Email this topic · Print this topic · Subscribe to this forum

- Lo-Fi Version Time is now: 8th June 2024 - 04:02 PM
Invision Power Board v9.1.4 © 2024  IPS, Inc.
All rights reserved 914World.com © since 2002
914World.com is the fastest growing online 914 community!
We have it all, classifieds, events, forums, vendors, parts, autocross, racing, technical articles, events calendar, newsletter, restoration, gallery, archives, history and more for your Porsche 914 ...