Evil Aviator

Most of the E-bay products are inferior. Fortunately, those who do not understand this concept are usually quite happy in their ignorance. Yes, there are some good parts on E-bay, as well as others sold by individuals who make quality products that do not require the consumer to pay for a big name. However, those who know the difference in quality do not need this forum to help them with their choices.

SAE J726 filtration standards, extended service intervals, and decades of proven race and off-road service are not "slick marketing".

A true ram air intake requires a divergent intake, not a convergent intake, so I doubt that intake you listed even works. Besides, ram air doesn't even come into play at speeds legal on US roadways. I find it ironic that you criticize intake kits, yet seem to like the one that is the most expensive and most worthless, lol.

Most of the E-Bay adapters are made out of poor materials, such as plastic. Also, they are usually not designed as well as the HKS adapter, which transistions well from round to square. Since the HKS adapter is only $20, I don't see any point in buying anything from E-bay.

Why are you risking your engine to try out a cheap filter? The K&N filters last for 10 years or 1,000,000 miles, which makes them quite cost-efficient if you look at the price over the long run.

BlackRocket has a 90 TII, which does not require an AFM adapter in order to fit a simple cone filter.

You could say that about nearly every performance part on the market. Do you really think that the majority of the people on this forum have a lathe, mill, and skill to use them? Hey, if you want to volunteer to make parts for free, then go right ahead, but most people work for something called a "profit", which allows them to eat and pay rent.

hondahater

iTrader: (2)

Evil Aviator The reason I'm trying out the filter is because it came with my ebay 15 dollar cold air intake for a honda prelude that I am converting to cai for a tII. I just don't understand where the differances in filtration would be they both look exactly the same and use the same material. Maybe you know something I don't wich is likely being that compared to you I'm just a newb. You mentioned "SAE J726 filtration standards" however we all know that hks and other foam intakes are infamous for letting in dirt and particles, I couldn't see an intake made after a k&n to have as much problems as the hks. I don't know what do you think

yxboom

gxlspeeder

I don't see the reason behind buying "quality" (expensiv) filters when the OEM filter is made out of paper. You can go down to autozone, pick up a afm adapter plater for 15 bucks and a paper cone filter for 25, 40 bucks for the same **** and the apexi stuff.

oztofrdm

its all about how much CRAP you want flying throught the intake and going into the motor theres a website that shows a comparison between all the top cone filters ie. apexi, k&n, HKS, Blitz, and the crap ebay filter. The apexi turned out to flow and catch the most amount of crap and still flow the best. i think the K&N and Blitz came in second. HKS came in last due to is just a foam material. Im not even going to talk about the ebay one, lets just say that the site didnt make me want to buy a 5 dollar filter.

if anyone has the www. post it please

hondahater

iTrader: (2)

yeah please if it is really that bad and not done by apexi or hks etc... I will not put an ebay filter on my car

oztofrdm

you wouldnt want dirt going into your expensive turbo and ripping it to shreads. yes it can happen and it happend to me. now that car is sitting in my back yard getting pissed on by my dog

hondahater

iTrader: (2)

no **** huh?? Damn I may just drag my hks back out and get a new filter for it.

NuTbAgSaN

hey, i have a good filter, and piping for an intake, can someone help me with a quick link or site or anything for an adapter or whatever i need that will hook up the maf, and air hoses and all that crap.
i dont know if i will be able to use the piping, but i got it free when i bought some used parts. and i already have a nice filter, just need whatever adapter...im not exactly sure what to look for. thanks

BlackRocket

ok so maybe e-bay isn't the exact way to go for me but whats this that almost every other intake post i've read people are using the honda prelude intake set-up? i've read it mainly being used on N/A applications but does it work for a TII?

hypothermix79

heres the link for the test

http://mkiv.com/techarticles/filters_test/2/

NuTbAgSaN

wow, those ebay ones are like $7...anyway i found that hks adapter for 26 so thats all i need

cwsttu

^^^ and who devised that test... yup you guessed it APEXI... well no ******* wonder they came out on top.... and plus those tests are garbage because you have to use the same variables to actually test a filter.... and from a post a long time ago somebody showed how those tests are not accurate... its like comparing the but dyno to a real dyno....

cwsttu

oh and for what its worth i also wanted to include a little story for the naysayers out there about ebay filters.... now im not saying this is every one of the filters on ebay but how are you going to know?

anyway a buddy of mine bought a ebay filter off ebay for his camaro so i could build him a cai... i fabbed up the piping for him and threw on the filter even though i said it was crap.... ok so wow nice gain ... could hear the diff in the sucking sound and nicer throttle response... so 3 days later were crusing and then all of sudden the car just has no response except down low and the top end power is GONE... so we limp back home and open the hood.... well guess what the whole front of the filter is GONE... yes gone so where did it go you ask right? you guessed it... right up the intake... had to pull the whole thing off and low and behold its there almost suffocateing the intake right before the throttle plates.... gee no wonder it was running rich all of sudden.... only good thing that came off of that pos filter was it broke in a huge piece (not small enough to actually go through the throttle body plates and **** the engine.... so we take then we buy a K&n (NAME BRAND) and look at the construction of the filter (not the filter elements) well as you can see k&n puts their filters together with just a bit more than glue or at least the cheap glue.... now the point of my story is if that filter just broke down and fell apart from the heat of 3 days on the camaro then imagine it being in the bay of a hot rotary engine..... now again im in no way saying that all ebay filters are like this but as for me and my wealth status i cannot afford to take that risk... if you must save a couple of bucks then do it but im sorry if you have worse any results like this on your car but remember YOU GET WHAT YOU PAY FOR ( least with k&n that is)

oztofrdm

also alot of cars still using AFM the extra amount of carbon will gum it up. and you will need a new AFM. But, thats with almost any open filter, my dads TT had just a NUESPEED intake and the AFM gummed up.

but you know, go and trust your high dollar mods with a crappy intake filter and have fun getting dirt in your turbo or better yet cracking a apex seal because you cheaped out.

Evil Aviator

They may look the same, but they don't use the same material. Here is a link to some K&N propaganda that also explains other filters somewhat, although it is obviously biased:
http://www.knfilters.com/facts.htm

That's not true about foam intakes in general. HKS would not market their air filters if they were really destroying people's engines, as that would be a lawsuit waiting to happen. I have a feeling that the stories you hear about the HKS filters falling apart or letting in dirt are due to the owner's fault for not replacing the filter, or attempting to wash and re-use the filter. The only reasons I don't like the HKS filters are because they get dirty very fast, and they can't be cleaned and re-oiled like the K&N filters. Other brands of foam filters may or may not be good, but I haven't tried them myself.

The OEM filter IS a quality (expensive) filter. Any other quality (expensive) paper filter will probably also work well. The main difference is that a quality (expensive) paper filter usually filters the air slightly better than the "performance" filters, but it will cause a bit more of a restriction and it will clog much faster.

This test was not performed in a scientific manner, was not performed to SAE standards, and the authors of the article were Apexi dealers (go figure, lol). Basically, it is an info-mercial.
http://mkiv.com/techarticles/filters_test/2/

The HKS-type adapters are only required for the 86-88 RX-7's because they have a square AFM. The 89-92 RX-7's have a round AFM, which will accept a round air filter, although you may need a transition adapter if your filter or intake tube is a different diameter. Most automotive performance shops sell rubber and metal adapters of various sizes, and sometimes you can get these items from hardware stores, depending on what you need.

BlackRocket

yeah i dont think its worth taking a chance on sucking up particles into the engine and turbo because of a couple bucks..i've seen the e-bay ones for cheap but i don't wanna make a mistake and have everything all discumbobulated

2ndGen.rocket

The one that I got off of Ebay is the same one Corksport sells on their website for $65. Is that clear enough now?

2ndGen.rocket

Notice where I said it doesn't look a performance improvement?



And convincing people that they are going to gain higher horsepower by spending hundreds of dollars on a cone intake is slick marketing. As I stated before, the filter I got off of Ebay is the same thing that Corksport sells on their website for 5 times the price. It's not a piece of **** that breaks in 2 days. I have one of those filters on my truck as well, and have had it for over a year, and through a bad *** winter as well. Not a single problem with it.


Now, someone calling me out as a deadbeat for making what I and many others believe to be a wise shopping choice is where I get pissed off. I've done business with alot of people on this forum, as well as alot of rotary and performance oriented companies. Being told I am a deadbeat for buying an air filter that isn't $200 got me a little heated.

But it's the internet, so whatever. I can go back to work now.

cwsttu

haha dont worry about it.... most people that know you know your not... and a sometimes funny guy in the lounge.... btw for what its worth yes some ebay filters are good ones... so i think it might be wise for you to maybe post what brand you bought and had success with... if i can find it i will post the filter name brand from my failure story... that way people can watch out for ebay bad brands and go for the ebay good brands... just a thought to help stop this stupid war

scheistermeister

im with 2ndGen.rocket.... filter makes a difference, but a metal AFM adaptor off ebay or one with a sticker and a slight differece in shape isnt going to make a huge differece or a difference worth the extra money to me IMHO.

RotaryWeaponSE7EN

iTrader: (6)

But the quality and reliability to some of use are more important.

drago86

Not to butt in here, but id dint want to star tmy own thread,.. does anyone know how eaxctly the apexi filter is lifetime use no matenice?...... i would think that a filter would either let **** through,.. or clog from traping it over time,.. is the filter BS,.. or does it have some sort of dust disintigration device?

87base RX-7

ive heard a K&N drop in filter with a the top cut out of the intake box works just as well as most cone filters anybody know how much truth there is to this?

GTUser

I finally got my A'PEXi power intake kit from Speed Machine Performance, for under $100 by the way, and installed it last night. After figuring out which way to mount the filter on the AFM it was a lot of fun to install. the air pump line fits directly on the AFM adapter plate so that you don't need a second small air filter, the air pump gets its air thru the A'PEXi filter, Nice touch. Also got several mounting brackets that were custom made to fit the FC mountings, another nice touch.

Question, I have been trying to figure out how best to route outside air to the cone filter and during the install saw that the OEM cold air ducting to the original air filter box was perfect for the new intake. Now, I've seen on this forum and other places elaborate efforts to cut sheet metal to create a cold air source for the filter. Why? with removal of the OEM air box, I should be able to build a custome box that uses the original cold air ducting Mazda put there.

Infact, my research indicates that the best place for a cold air intake is at those places on the car where air pressure is the highest. At this point you actually get some increased air flow into the intake due to the pressure differential. Air pressure is highest where the air flows the slowest around the vehicle and this is usually around the radiator area of any car. Guess where the OEM intake is. A very good location for an air intake! As I said the OEM intake ducting dumps the air flow right on the intake filter and once you build the air intake box should provide an excellent intake system.

Anyone else explored this option?