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Old 12-09-2004, 07:03 PM   #1
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Default K and N filter

Just bought one... anything i should know when i replace my older factory filter?
will i see any performance changes or will i notice anny king of change?

tony
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Old 12-09-2004, 07:10 PM   #2
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It will just be a direct swap. Your thottle response will be improved, as well as gas milage. You will get around 5 horses from it.
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Old 12-09-2004, 08:31 PM   #3
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Quote:
Originally Posted by Sol
You will get around 5 horses from it.
Probably not quite 5 HP unless you gut the airbox (not sure if the 2000+ is a guttable airbox). Most likely you'll get 2-3 hp, but if you can gut the airbox you'll see around 5-7. Get a K&N cone, with a smooth bent 3.5" pipe in place of the ribbed factory air hose and you'll see upwards of 8-10 hp, and maybe even as much as 10-12 with it heat shielded and with a ram air duct.
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Old 12-09-2004, 08:36 PM   #4
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Quote:
Originally Posted by OLBlueEyesBonne
Quote:
Originally Posted by Sol
You will get around 5 horses from it.
Probably not quite 5 HP unless you gut the airbox (not sure if the 2000+ is a guttable airbox). Most likely you'll get 2-3 hp, but if you can gut the airbox you'll see around 5-7. Get a K&N cone, with a smooth bent 3.5" pipe in place of the ribbed factory air hose and you'll see upwards of 8-10 hp, and maybe even as much as 10-12 with it heat shielded and with a ram air duct.
The air box is easy to gut out, just remove from the car and gut out anything that looks like it could restrict air. I used a jig saw but a dremel would be better.
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Old 12-09-2004, 09:28 PM   #5
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Well, if the car is under warranty, might not wanna gut it.
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Old 12-09-2004, 09:33 PM   #6
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Quote:
Originally Posted by Sol
Well, if the car is under warranty, might not wanna gut it.
The air box in my sig is gutted and looks stock, besides the removal of the sound resonator and some restrictive plastic is not going to throw any alarms at the service dept?
If this truely is a concern however you could go with a rice pipe and cone and then switch back to the stock box for service?
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Old 12-09-2004, 10:11 PM   #7
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Yeah I'd have to agree that the cone + pipe is going to get you the most bang for your buck. Of the cars I've looked at the bigger restriction seemed to be the tube feeding the filter, rather than the filter itself.
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Old 12-09-2004, 10:59 PM   #8
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yeah i already bought the filter for the box and put it in. So you guys are saying that i should gut the airbox? Anybody have any pictures or better instructions to gut an airbox?

tony
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Old 12-11-2004, 01:05 AM   #9
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Quote:
Originally Posted by leftd90
yeah i already bought the filter for the box and put it in. So you guys are saying that i should gut the airbox? Anybody have any pictures or better instructions to gut an airbox?

tony
It all depends on what you wanna do. The K & N is real nice. you'll breathe around 30% better, and get the 3hp'* or so as mentioned above. Also, it'* going to save you money in the long run because you won't need to replace it. Just make sure you get the cleaning kit that is made for it. You can clean it every 25-50K. I think I read that a K & N at 100k is better breathing than a stock air filter new, provided you don't drive in the dirt all the time lol.

I have very few mods. Mainly the filter, and the smaller pulley. I think my blue beast performs real good, and I wouldn't be supprised to get a 14.9-15.0 in a 1/4 mile.
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Old 12-15-2004, 03:51 PM   #10
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Default gutting airbox/reusable filters

If your car is under warranty, and you want to get your transmission fixed (for example), you might want to check your mods. GM is trying to get tricky and blame K+Ns and all other type replaceable air filters for problems with the transmission. GM states that the oil from (over-oiled) filters collects on the MAF sensor, causing erratic operation, and in turn causes a transmission to act erratically and fail early on in life.

The Magnuson-Moss Warranty Act (15 U.*.C. 2302(C)) should protect us from this crap, but GM is pretty powerful and the aftermarket segment struggles to overcome.

Most of you would agree that this is a just a lame attempt to take money out of our pockets to repair transmissions which are faulty to a large degree to begin with. Most of the TSBs state that metallic "chips" and other blockage cause the valve body to misbehave. Read below for the TSB from GM:
++++++++++++++++++++++++++++++++++++++++++++++++++ +++++++++++++++++
SERVICE - ALL BUICK, CADILLAC, CHEVROLET, GMC TRUCK, ISUZU, OLDSMOBILE, PONTIAC AND HUMMER DEALERS


Subject: A/T Shift, Engine Driveability Concerns or SES Light On as a Result of the Installation of an Aftermarket Reusable, Excessively Oiled Air Filter -- 2004 and Prior Cars and Lt Duty Trucks and 2003-2004 HUMMER H2
Message #: VSS20040056

Corporate Bulletin Number 04-07-30-013 will be available in SI on March 18, 2004.

Automatic Transmission Shift, Engine Driveability Concerns or Service Engine Soon (SES)
Light On as a Result of the Installation of an Aftermarket Reusable, Excessively Oiled Air Filter

Models: 2004 and All Prior Cars and Light Duty Trucks
2003-2004 HUMMER H2

DO THIS
First, Inspect the vehicle for a reusable aftermarket excessively oiled air filter

DON'T DO THIS
DO NOT repair under warranty if concerns result from the use of a reusable aftermarket oiled air filter.

The installation of an aftermarket reusable, oiled air filter may result in:

1. Service Engine Soon (SES) Light On

2. Transmission shift concerns, slipping and damaged clutch(es) or band(*)

3. Engine driveability concerns, poor acceleration from a stop, limited engine RPM range

The oil that is used on these air filter elements may be transferred onto the Mass Air Flow (MAF) sensor causing contamination of the sensor. As a result, the Grams per Second (GPS) signal from the MAF may be low and any or all of the concerns listed above may occur.

When servicing a vehicle with any of these concerns, be sure to check for the presence of an aftermarket reusable, excessively oiled air filter. The MAF, GPS reading should be compared to a like vehicle with a OEM air box and filter under the same driving conditions to verify the concern.

Transmission or engine driveability concerns that are the result of the installation of an aftermarket reusable, excessively oiled air filter are not considered to be warrantable repair items.
++++++++++++++++++++++++++++++++++++++++++++++++++ ++++++++++++++++++++
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