K&N
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Joined: Jun 2006
Posts: 662
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Originally Posted by AbandonedBronco
I have a K&N in my 300. If you get one, get it from autoanything.com. They're well priced (about $15 less than auto stores) and I think free or very low shipping.
As for gains, I noticed about 1/2 - 1mpg increase and a little extra pick me up. It all adds up in the end, especially since you never have to replace it. After 5 regular air filters, you've already paid it off.
As for gains, I noticed about 1/2 - 1mpg increase and a little extra pick me up. It all adds up in the end, especially since you never have to replace it. After 5 regular air filters, you've already paid it off.
Postmaster
Joined: Mar 2002
Posts: 3,545
Likes: 4
From: Coal Region
5 regular filters but u need to re-oil it and the kit is around $10...how is that cost effective?
personally id rather buy a nanofiber or dry flow filter. its a dry style filter that filters better then the best paper, reusable and all u need to clean it is some soapy water and let it dry.
personally id rather buy a nanofiber or dry flow filter. its a dry style filter that filters better then the best paper, reusable and all u need to clean it is some soapy water and let it dry.
Postmaster
Joined: May 2002
Posts: 3,241
Likes: 3
From: Broken Arrow, OK
K&N filters suck. I have done dyno testing on my wife's car and we got 1hp over the stock filter with a K&N and an aftermarket foam. That's on a 350hp car, why would you need anything more on a 150 hp truck? On my truck the difference between a stock filter covered in nasty crud 1/8" thick and no filter or intake tubes (i.e. open throttle body) was less than 2 hp. Added airflow does equal more power, but adding a new filter doesn't add airflow, it adds airflow capacity. The airflow into the engine is a product of everything between the filter and intake valve. Without fixing the restrictions downstream of the filter the added capacity is no use.
Postmaster
Joined: Mar 2002
Posts: 3,545
Likes: 4
From: Coal Region
Originally Posted by Silver Streak
K&N filters suck. I have done dyno testing on my wife's car and we got 1hp over the stock filter with a K&N and an aftermarket foam. That's on a 350hp car, why would you need anything more on a 150 hp truck? On my truck the difference between a stock filter covered in nasty crud 1/8" thick and no filter or intake tubes (i.e. open throttle body) was less than 2 hp. Added airflow does equal more power, but adding a new filter doesn't add airflow, it adds airflow capacity. The airflow into the engine is a product of everything between the filter and intake valve. Without fixing the restrictions downstream of the filter the added capacity is no use.
a better way to look at this is how to make the air intake tempature lower. by insulating the box and ducting from the underhood heat u can increase (slightly) the power and gain mpg. keeping the air tract closed it also the best way to prevent outside contamination. quite a few times i have heard the aftermarket air filters dont seal into the stock boxes right and let dirt in. not to mention the filtering capacity of an oiled cotton gauze compared to a standard weave is significant less. sure the oiled guaze may work better "dirty" but its just that...dirty.
Postmaster
Joined: Mar 2002
Posts: 3,545
Likes: 4
From: Coal Region
modified small block chevy, 2 more cylinders with 50 more ci and a lot more air flow and rpm. was is carburated? the intake set up is different then a fuel injected.
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Postmaster
Joined: Dec 2006
Posts: 3,603
Likes: 10
From: Spokane, WA
Most of the testing on parts like the K&N is done on high performance, high rpm engines and the results are usually not applicable to stock or mildly modified engines...that is why the "BUT" in my post. K&N also markets stub stacks claiming up to **** cfm gain in carb air flow. But they don't tell you that this gain probably came on something like a small or big block high performance stroker with a large carb spinning at 7000 rpm in a lab on a dyno...but they will certainly sell one to anyone who plunks down the money.
Carpenter Local 745
Joined: Apr 2006
Posts: 5,794
Likes: 11
From: on da beach
K&N has a great marketing program and it works with the general public.
Of course you will buy it if the claims are more HP AND MPG.
Marketing.
These filters are not the "best" for Ford MAF equipped trucks.
I avoid K&Ns on my EFI equipement, but I think these work great for carbed engines. I.E. big blocks, motorcyles, etc.
With more air flow on EFI trucks, doesn't the computer add more fuel to the engine and lower the MPG ratings?
Of course you will buy it if the claims are more HP AND MPG.
Marketing.
These filters are not the "best" for Ford MAF equipped trucks.
I avoid K&Ns on my EFI equipement, but I think these work great for carbed engines. I.E. big blocks, motorcyles, etc.
With more air flow on EFI trucks, doesn't the computer add more fuel to the engine and lower the MPG ratings?
Postmaster
Joined: Dec 2006
Posts: 3,603
Likes: 10
From: Spokane, WA
Probably so but on a carbed engine there most likely wouldn't be enough difference to make a difference in A/F ratio unless spinning at rpms that a 300 I6 just usually doesn't see. A larger snorkel on a stock air cleaner housing might help some with air flow on a carbed engine.
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