I'm honestly perplexed how many times in different threads I've seen comments about noticing the power increase from just adding the panel filter. I personally have no proof either way for the RX-8, but I'd wager back to back dyno runs would reveal more of a placebo effect than any actual power gain.

 

I want to hear that on the radio . That is a gem of post their my friend.

 

HI

This is an extremely nice post, and, since a was kind of indecided about getting a K7N or a Mazda Speed Cold Air Intake... well, you already gave me the answer.
Within this month i will order a Mazda Speed Exhaust and i will pick up the Air Filter for my red baby.

THANKS AGAIN
BEST REGARDS

 

the same could be said for a cat back system, CAI, flywheel, pulleys.... several studies have shown your body can only detect a 5% power difference in a blind study, none of these mods individually will give you 5% bumps


for the record, i have the K&N panel filter and it does make the intake sound a bit deeper then stock... no other aspects are going to light your world on fire though

 

You're right, this post is not about real power gains. It's just about feel and perception. Don't you feel better driving your car after it's washed and detailed?

 

Back when I drove Fox Mustangs the K&N filter discussions were all the rage. What I remember is this, you can't really feel 1-2 horsepower regardless. It's a psychological thing...regardless I'll cough up the dough for a panel filter for now.

 

i wouldnt doubt that i t adds hp, the stock filter is so restrictive and thick... so I would assume that the k&N lets alot more air flow through.

so... has anyone had any probs with their MAF?

 

None here so far. Im not using the Panel Filter(Stock Airbox Filter Replacement).

Im using the Typhoo Version 2. (Circle Shape Filter)

I clean mine about every 1/2 year. Cuz it gets really dirty.

Its easy, and My MAF still functional.

HP increase I really doubt it. Since even mine, the revisied Version did NOt get that much of a Horse power increase (I will say 4hp the MOST) I do not really think the Panel filter can do much.

You can say our Renesis can be able to breath better, but it will not make it go any faster (or barely noticeable)

 

Even if the panel filter didn't add HP, it will definitely free it up. What i meen is that the HP can be used more effectively over the rpm range. For instance , take the MINES Skyline, a few aftermarket parts was added to the car,more of it was tuned , throttle response was adjusted,lighter wheels, etc. After said and done the car put the same HP as stock but because it was tuned for responsive action, the car performed better overall.

I had the HKS RS and the intake only came alive after 6500 rpm, the K&N panel filter helps make 8 comes alive after 2500 rpm. The K&N does what the HKS does for the fraction on the price and adds the responsiveness throughout the rev band. Yes the HKS has more kick in upper power band,which is fine for people, but IMO, i rather have the responsiveness throughout the rev range.

So even if both added 0-3HP, i still rather have overall responsiveness than just high end kick, but hey thats just me....

 

One thing to keep in mind, is the fact that weather conditions affect your car more than any intake(for the rx8) will.

 

I know what you mean. I like K&N's stuff too (except for their Version 1 Typhoon) all the autos in my home use K&N filter's. Really good for the price, easy clean up. and yes your car can breath "easier" so it can run" smoother".

 

Mine is on it's way...was time to replace the stock filter, so I saw no reason not to upgrade to the K&N drop-in.

 

Anybody ever try running this filter without the oil? Wouldn't mind one to add a little noise if it's true but am pretty worried about the oil getting sucked into the MAF, and this does seem to be a potential problem from posts in the past.

 

i just replaced my k&n drop in filter for the racing beat intake system. when the drop in filter was in, i noticed that the idle wasn't very steady. i had to pull out the MAF sensor regularly to clean off all the oil from the filter. when i went to install the racing beat intake i found puddles of oil all inside the intake piping. there was so much i had to shove oil rags to soak it all up. soon as i installed the racing beat intake, i noticed that the car idled perfectly. i won't be using drop in wet filters ever again.

 

puddles of oil?

Are you sure this was not engine oil? There is not enough oil in a K&N drop in filter to form a puddle. I also don't understand your comment you will not use a drop in wet filter agian when in fact you are with the Revi.

 

Yeah, if you knew the amount of oil used in the K&N filters, you'd know that you couldn't have puddling from it. You've got another problem going on. I wouldn't be surprised if in a month or two suddenly your new air filter is having problems at idle, and you've got puddles of oil again.

 

Sorry, but I had to sign up for these forums just to call this one out. I have the drop in K&N for my 8, and there is absolutely no way it has enough oil in it to cause that much of a MAF problem. Claiming it creates puddles of oil is absurd unless you submerged the filter after cleaning it. Even coming pre-oiled (which i've heard many say are over oiled) from the factory, I see no significant build up and observe no adverse performance resulting from normal use of the filter over a period of 2 months. I recommend this filter, it greatly smoothed out my idle compared to the stock restrictive paper filter, and it improved my gas mileage slightly. No noticeable performance gains, but a little peppier sounding after 6000 rpms.

 

i just say what i've experienced. yes, it was oil from the filter. check the intake boot from the MAF back to the throttle, tell me if you don't have puddles of oil. i've put about 10k on the filter.

 

Mine will be here tommorow (w/ a free K&N oil filter). I just installed my GReddy SP2 Exhaust so I'm settling for the panel filter for now. The money I saved will go towards a real noise maker, the RP Supercat that I should pick up in the next two weeks.

 

HI

i ordered my K&N on Friday, it will be here by the end of next week, but, let me ask you this: how did you mount the Air Filter?
Did you just changed the filter and left the complete airbox or you took off all the front part of the air box and put the K7N visible?
Because there is people that said thaht if you take off the front part of the air filter, you void your warranty, but, with that filter you have to take it off because otherwise it will sucks air in the engine, so, it's bettere to live it open ...
what did you do?

THANK'S

 

I don't know really what you are refering to when you say people removed their airbox. Is the k7n a cone filter I presume? I just straight replaced my paper filter following the dyi on this site.

 

I don't know what you think is happening, but do a search for oil on air filters. There are numerous people who've found oil on their stock air filters that's coming from somewhere else in the car. So people with stock filters are having rough idle and oil puddles. I'll say it again.

There's no way that a factory shipping K&N filter would have enough oil in it to cause puddles. You have another problem.

Here are some examples.

 

Just dropped in my K&N yesterday, it definitely does sound a bit different. Everything else seems to be the same, but good to know I would only have to clean this thing every now and then instead of having to keep purchasing new ones.

 

so tell me what my problem is. car doesn't hesitate and there isn't any loss in power. i'm not burning any excessive amount of oil. i have driven my car for 20k on the stock filter and had no evidence of oil. drove on the k&n drop in filter for about 10k and just two weeks ago i swapped it out for the racing beat system. that is when i found oil all inside the intake boot (ribbed portion). the oil consistency does not feel like engine oil, nor does it smell like engine oil. so you tell me...

if i find oil inside the intake boot again, i'm going back to stock.

 

ok since this has happened to me more times than i want to admit here go's
i changed the air filter to a cone type some time ago..it works just fine on nomal driving but if anyone out there love to kick it in the butt every now and then what happens with cone filters and some of the aftermarket filters is they pull in way to much air and pull the oil right out of the intake which will collect on your filter and also in the intake tube which in time will cause your maf to get dirty and also cause a cel to come on (after having my dealer state it had a high rpm misfire due to oil on the maf sensor) recleaned and ok.. so on this note i will soon try out the k&n filter to see how it works out ..so far i use the $25.00 short cone which keeps a pretty smooth idle and gets a little louder than stock at about 6500 rpm's im happy for right now but i'll try the k&n filter because of there wro.and the fact that it's a drop in.(also be sure you leave in the two screens that are in the tube or you will have some bad idle issues.. see ya!!