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thanks gearbox.... just wondering, are powerstack and S&B correlated?

 
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Hahaha. I'm gonna use that as my sig for a while if you don't mind.

Um, yeah for your question...S&B was the company to first introduce the velocity (power) stack design. Basically it leaves the end of the filter open to increase surface area and decrease turbulence within the filter.

 
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Interesting thread.

 
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haha... thanks again. you can use whatever quote you want...

 
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What do you guys think of the HKS mushroom filters? I've been thinking about getting one to replace the damaged AEM (rebranded K&N) filter on my intake.

I may look to get the S&B filter though. Looks pretty good.

 
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That is why I threw my K&N away for an Apexi cone filter.

 
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i still want to see what volant has for us before going for k&n and a diff. filter...

if volant ever decides to actually make one for us at least

 
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Hmm... I've got the K&N Drop in filter. Think I should take it out?

 
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Yeah throw it in the trash where it belongs. The HKS foam filters are the absolute WORST filter EVAR! It comes in at around 80% efficiency. Might as well use nylon stockings. I would stick to using S&B filter or apexi (although it's hard to get one to fit).

 
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so what size of the s&b should I get? I want it to fit and I'm way to lazy to go out and measure. I'll be ordering mine this thursday hopefuly.

 
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if i'm not mistaken... k&n filters don't filter out as well as a stock paper filter... yet it yields more HP due to the less restriction of air flow. Pros vs cons...

 
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i took out my drop-in today.i didn't even notice a change at all. yeah i spent $50 for nothing. well i'll keep an eye on my gas mileage after putting the stock filter back on. BTW since putting in 89 octane in the car instead of 87 the car is running so much better.

 
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it depends on the intake you have. For the V2 that I have, I need a 5" cone and 3 and half inch opening.

 
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Does anyone know the inlet opening for the fipk?

 
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I think I'm going to buy a new filter soon, probably napa gold. My car still has the original honda filter it came with in 2001 and the thing is in good shape still... a tad dirty but for 3 years and 21xxx miles it's good.

AC delco make them for our cars?

 
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Not sure, but those obviously filter the best. Napa gold is pretty good too. The AC delco is alot more restrictive at almost 99.9% filtration. I think 99% is still good compared to the K&N way below that.

 
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So can you get more hp from more filtration?

 
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^naw, you get more life out of your engine.

 
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If you get the S&B cone filter, you'll get better filtration AND more hp (due to the filter design).

 
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Well I better get one then. Do we know which one to get yet?

 
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Not sure. My NEW fipk comes in next week hopefully. Since you said there's no room, I'm just gonna get the same length as K&N. The S&B open filters require at least 1 inch of clearance in front.

Ironfist, you just have to take the filter off and measure the tube diameter. That's the one you order, and also pick the filter length. Can you post up if you measure it?

 
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Gearbox, tell us how many motors you've torn apart and found excessive bore or ring wear because of a K&N filter. You must be an expert based on the number of times you post on K&N filters here. Seems like every day I read some new insight you have on them. My experience is a bit different.

I just tore down my 440 that had over 400 passes. It's an 11 second car that has run a K&N since day one. Guess what, no bore wear. None, nada. The pistons slid right out.

My 351C had 60,000 street miles on it with a K&N before I tore it down to turn it into a race motor. Hmmm, once again, no bore wear.

My buddy has a 9 second 460 Falcon that he raced using the same motor for 3 years before it grenaded. It also runs a K&N. Guess what, the bores were fine (the block, 7 rods and 7 pistons were trashed, but the bores were fine).

Soooo, please tell me where your experience comes from. If your just posting stuff you read somewhere, I couldn't care less.

Please stop beating this dead horse...

 
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PS I also find it amusing that you spend so much time trashing K&N's cotton gauze filter, only to recommend another cotton guaze filter in the same thread. That filter wasn't included in the testing so why would you presume it flows and filters any better or worse than my wife's nylons. Not only that, but you recommend checking into it based on what you heard. Come on, dude, be consistent. If you are going to trash K&N based on someone elses research, don't go recommending a similar product without any research at all.

 
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That other company has been making filters for specialty EXPENSIVE equipment for over 30 years. Have you noticed how the large farm equipment and construction companies don't use K&N? They actually can't afford repair costs caused by a bad filter.

When did I ever say I was an expert? I've only had my own engine taken apart. All I can say is I've only gotten buildup on the TB during the year I was using the K&N filter (which was a huge mistake on my part).

You are one of those people who argues over something even though there is evidence right in front of your face telling you different. After seeing the test results, I'm not gonna be stupid and keep using the filter that doesn't even come close to meeting the factory set filtration MINIMUM.

Please go hold your K&N up to the light and tell me 5 micron particles can't pass through all those holes. It is now a PROVEN FACT that these filters do not meet OEM recommended levels for filtration. Nuf said.

The S&B filter I plan to get has such a better build quality there's no comparison. Still, I won't simply put it on because of what I've heard. I'm making sure everything looks right when I actually get it. May even perform a test of my own.

Oh yeah the S&B flows better than K&N due to a more advanced filter design. I'm not presuming anything. If you know even a small amount about air flow properties, you will see why.

 
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Every time I hop onto this board you're trashing K&N. I respect your right to state your opinion. It just bugs me that you state it over and over and over and over. Just give it a break.

You had a bad personal experience and you read someone elses article. Does that warrant umpteen hundred posts on this topic??? I've had a different experience and read other articles and came to a different conclusion, that's all. The difference is I don't chime in with my opinion at every opportunity.

By the way, I agree that a K&N filter is inappropriate for farm and construction equipment. However, it is appropriate for race applications and for street applications when properly maintained.

Everything we do to make cars go faster wears them out faster. Air filters are no exception. It's all about what you want. If you want your motor to last forever, use an OEM filter and change it yearly.

 
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Okay cool. I'm not here to argue. And you're right I do mention it alot, so I'll leave it at that. Not everyone has the same opinion about it. I do have a habit of bashing stuff that didn't work for me, even though other people still use it. Sorry.

 
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I'm cool with that. Sorry for coming on so strong...

 
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Group hug!!!

 
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so the filters on injens must be alot worse than k&ns?

 
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It's hard to say. Someone did a test with K&N, apexi, and hks, with the apexi coming out on top. I'm not sure about injen, but I know AEM started making their own filters (they used to come with K&N).