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[quote author=revspeed702 link=topic=53928.msg881427#msg881427 date=1155347633]
For those who have bought the K/N what gains to you think it gives(hp N Torque) you? Thanks!
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I would be surprised if you noticed any type of gain with the K&N filter. I have used them on various vehicles, never noticed any increase in power at all, but being able to go 40-60,000 miles before cleaning the filter is nice. I think that is where the benefits of the K&N comes into play - just clean and re-oil every few years. I once went over 60k in my F150 before cleaning my K&N and it really wasn't all that dirty.
 

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Usually you have to do about 3 minor mods to an engine before you "feel" any power gain.
Example.....performance exhaust, K&N and throttle body.
 

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Or a Filter and Catback exhaust and you will feel more power. TB dosent really add power it just spins the air
 

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[quote author=SEV6Fusion link=topic=53928.msg881691#msg881691 date=1155358821]
TB dosent really add power it just spins the air
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Not really. An engine is like a big air pump...more air in (with a larger throttle body) more power
 

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You wont notice any hp or tq gain if you were to take it to a dyno guaranteed.
 

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You won't get any noticeable power gain with just a filter AND a catback. The restriction in the exhaust is in front of the cat.
 

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[quote author=hwm3 link=topic=53928.msg884074#msg884074 date=1155522451]
The restriction in the exhaust is in front of the cat.
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No, I was quoting what you said. Easier than typing it out again myself.
 

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A word of caution - in some cases a K&N lets through A LOT MORE dirt then a conventional filter. Do some research on the subject  - ya might not like what ya find. I won't use one on a daily driver. Now, as for a FIPK with a high quality oiless (Amsoil Ea or AEM Dryflow) filter in place of the K&N - now your talking!  8) :D

 

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[quote author=cos link=topic=53928.msg887407#msg887407 date=1155654485]
A word of caution - in some cases a K&N lets through A LOT MORE dirt then a conventional filter. Do some research on the subject  - ya might not find what ya like. I won't use one on a daily driver. Now, as for a FIPK with a Amsoil Ea filter in place of the K&N - now your talking!  8) :D
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Friend of mine had two mechanics tell him NOT to use a K&N on his Nissan 300Z because they said the dirt they let through plugs up the engine sensors.
 

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I have been K&N on my cars for a while. Never noticed any problems.

As far as dyno umbers, nothing you'd feel. I have personally run a 5.0 LX Mustang (pretty stock) on the dyno, switched to a K&N Panel filter and without much of a cooldown, say about 4 hp. So there's some, but the big gain you are getting with one of these panel filters is just never having to replace the filter again. It's worth it just for that.

The FIPK's are a different story though.
 

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I agree COS! The K&N filters do allow more air and dirt through the filter. K&N and similar oiled filters work better as they get older, however with the ultra sensitive sensors in todays new cars, most manufactures, dealers and mechanics will NOT recomend oiled filters for new cars. The oiled filters can and will (especially when new) spread oil to the MAF and sensor causing poor sesnor readings and possible problems with the intake system.

My dealer told me that if they see a K&N filter they will not do any engine repairs under warranty. Also in the fine print of the warranty book is says that any part replaced with a non-recomended part can be considered abuse of the vehicle and void the warranty.

The gain from a K&N filter is truely not worth the potential problems.
 

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[quote author=swoop1156 link=topic=53928.msg884544#msg884544 date=1155555850]
[quote author=hwm3 link=topic=53928.msg884074#msg884074 date=1155522451]
The restriction in the exhaust is in front of the cat.
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[/quote]

You can say what you want my car made a definite improvement in power, you wouldnt even be able to say anything till you have a catback system.
 

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They are definitely proven on the dyno to make a small increase in power.Its nice to never have to replace a filter again though.Usually you have to do a couple modifications before you start to actually notice anything when you are driving the car.
 

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The Problem is this, we drive a car that was built for fuel economy. And waisting all this money on at least a 3hp gain to the wheels, I say is worthless. Exhaust is fine, and the computer system. But to waist $60 on a K&N filter for just 2hp. I say no. If you are looking for fuel economy, go with fram. Safe and it wont hurt your warranty. Dont get me wrong, K&N is a hell of a system, but only for high performance cars. High Performance cars, respond better with these systems. But your family sedan car was made for a nice smooth ride and save you money on the pump.

If you want to go fast, invest all of that money on the new 2007 GT500 Shelby Cobra, or go get a 2003 Cobra. :D
 

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I think the $60 investment is worthwhile over the long term ownership of a vehicle. I have around 200,000 miles on my K&N in my truck, and it has paid for itself over replacing a paper filter. You can go 60k miles or more between cleanings, at least that is what I have found in my F150. It doesn't make an ounce of difference in performance, but it is nice forgetting about your filter for 3 years, then checking it, and discovering that is it still relatively clean!

[quote author=MidNiteKnight link=topic=53928.msg925443#msg925443 date=1157073783]
The Problem is this, we drive a car that was built for fuel economy.  And waisting all this money on at least a 3hp gain to the wheels, I say is worthless.  Exhaust is fine, and the computer system.   But to waist $60 on a K&N filter for just 2hp. I say no.  If you are looking for fuel economy, go with fram.  Safe and it wont hurt your warranty.   Dont get me wrong, K&N is a hell of a system, but only for high performance cars.  High Performance cars, respond better with these systems.  But your family sedan car was made for a nice smooth ride and save you money on the pump.

If you want to go fast, invest all of that money on the new 2007 GT500 Shelby Cobra, or go get a 2003 Cobra. :D
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