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Old 04-20-2003, 02:22 AM   #1
Kevin Thomas
Street Racing Instructor
Moderator
 
Member#: 110
Join Date: Jul 1999
Location: 1997 OBS, 1996 SVX, 1988 RX
Vehicle:
1989 1989 XT6

Default K&N Panel Filter and 1/4 mile times

Has anyone noticed a performance increase in their 1/4 mile time using a K&N Panel Filter? How about a K&N Panel Filter and cold air setup (drawing air from outside of car)? I'm not talking seconds being taken off but rather 10ths of a second. Even a 2-3 10ths would do. Any information would be good. Thanks!
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Old 04-20-2003, 02:46 AM   #2
Ruff
Scooby Specialist
 
Member#: 32131
Join Date: Jan 2003
Chapter/Region: NWIC
Location: Oregon City, OR
Vehicle:
2006 Nissan 350Z
Was 01 2.5 RS

Default

Well I have a 2001 2.5 RS with just an Injen intake. Here is my fastest 1/4 mile, actually from last night..

R/T--------.610
60'--------1.979
330'------6.039
1/8-------9.465 at 71.37 mph
1000'----12.459
1/4--------15.005 at 88.51 mph

So yeah, I say it helps considering this is probably the fastest RS time I have seen for someone with just an intake.
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Old 04-20-2003, 10:08 AM   #3
Kevin Thomas
Street Racing Instructor
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Member#: 110
Join Date: Jul 1999
Location: 1997 OBS, 1996 SVX, 1988 RX
Vehicle:
1989 1989 XT6

Default Reasons

Ruff,

That's an excellent 1/4 mile time considering you only have an aftermarket intake.

The reason why I was asking about just a panel filter is I'm trying to decide whether I want to use the stock air box with cold-air coming in or an aftermarket intake with a rigged up cold-air unit.

Using the stock box, it's easy because it's hooked right up to where there cold-air is coming in. With a JC Sports intake, it's drawing in hot engine bay air and I feel this is really hampering the performance of the intake. The radiator fan blows really hot air all over the air filter. I'm trying to figure out what I can use to isolate the air filter from the engine bay and just have it draw air from the fender well area. Some type of insulation/heat resistant material from a Home Depot type of store would be great.

If a simple panel filter is affective, then I may go about purchasing a K&N panel filter and just use the stock air box instead of the JC Sports unit.
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Old 04-20-2003, 10:16 AM   #4
Cabal
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Member#: 31159
Join Date: Dec 2002
Chapter/Region: TXIC
Location: Austin, TX
Vehicle:
2006 WRX, 2008 2.5i
San Remo Red

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K&N panel filters have been dyno-proven to do absolutely nothing except save you money. A good CAI (Cobb) would make a difference, if slight.
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Old 04-20-2003, 11:17 AM   #5
aj's25rs
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Member#: 30160
Join Date: Nov 2002
Location: l.i n.y
Vehicle:
9900 2.5rs
rbp,srp

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i cant see a k&n not helping since all cone filters including cobb are designed the same(cotton filter with oil) and shiv did test his rs-t with the stock air box and stock filter and lost 2psi and then gained the 2psi back by putting in a k&n drop in. just my 2 cents
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Old 04-20-2003, 01:52 PM   #6
joefocker20
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Member#: 13745
Join Date: Dec 2001
Chapter/Region: RMIC
Location: Colorado Springs, CO
Vehicle:
2004 STI
Silver

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Well, any gains by a K&N are negligible. They just save you money. I have a Ganzflow and K&N in my car, and after I buy cams, a clutch, and a flywheel; I will be replacing it more than likely. It does a good job, but I need all of the help I can get N/A since I live in CO and turbo isn't my thing.
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Old 04-21-2003, 04:22 AM   #7
2.5RSMatt
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Member#: 30497
Join Date: Nov 2002
Chapter/Region: SCIC
Location: San Diego, CA
Vehicle:
00 RSTi
FUK HDR

Default

I had a KN filter in my focus and I only notice a extremely small amont of throttle response difference or that could have been my brain compensating for the fact that I had just got a KN filter. I didnt feel any diff in hp or anything else.
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Old 04-21-2003, 05:37 PM   #8
Kucheto
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Member#: 3688
Join Date: Jan 2001
Location: PDX
Vehicle:
2002 Impreza 2.5RS
Blue Ridge Pearl

Default

I just dropped K&N filter in my 02rs and the car is just a bit louder past 4000 rpm. As far as performance (hp gain that is) the car feel the same.
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