I had a curious question, that I never really attempted to bring up. But what is the comparison of a dropped in filter for the intake like the ralliart or K&N filter for the stock box. Is thier any increase in performance.

What would that compare to a short ram intake or cold air intake. I was wondering because I am just curious because I would really think much of drop in filters since the surface of air filter isn't bigger, nor does it have as much freedom. Any care to enlighten me, without turning on the flame throwers. ^_^

 

lol...no flames...maybe a little bit of on the side of gas mileage...no performance...they quote like 2-3 hp which is probably true...if you want to keep a stock look...and maybe get another couple miles per gallon its worth the 30-40 bucks

 

It's actually $65-71 for a new one. It's part # 33-2105.

I was just looking it up when I came across this thread.

It'll help with the airflow, due to the way that the filter is designed. It doesn't use a paper type of design, but an oily cloth design, which catches more dirt and flows more air.

If you don't wanna pony up the $200 for a good intake system, stick with this, it'll help.

 

Don't waste your money on a drop in filter.

 

depends on what youre going for..pretty much. i have the K&N drop in filter and its great! i honestly cant notice a difference in power but its there im sure. and im sure i get more gas. hey, its better than paper! i leave the box open instead of clamping it closed..i dont know if this is bad for the car. i wouldnt think so kus it would get more air flow. but it sounds like i have an intake. but im sure ill be getting an AEM as soon as i get the money

 

I'll sell you mine for $50 shipped if you wanna try it. I'll clean and reoil it before I send it out. just PM me.
FYI I'll be replacing the fram cone in my SRI with a K&N cone as soon as this one gets old.

Wait- that says you drive an 03 EVO... do they use the same panel filter?

 

Well honestly. I think the drop ins are nothing great. I have always used short rams or cold airs, because it doesn't look like that great a difference. On the other side has anyone installed an intake worthy of buying for the evo, or are we still waiting on that... Most things I see aimed at are ecu's and exhaust. Maybe someone knows the physical conditions of the current air intake box, is it to restrictative or is it fine where it doesn't need to be upgraded. Any vendors care to share the wealth?

 

RMR already has a hot selling evo intake system. I think it's $125. Go to www.rmrproducts.com. When I talked to Rhys Millen this weekend, he said they were flying off the shelves.

 

I don't think that the kit includes the filter, just the bracket.

 

It includes the filter and bracket to mount to the MAF. I saw it in person. The filter has the RMR logo sray painted on the filter element.

 

I have problems with any filter that replaces an airbox drawing in cool air with an open element sucking in heated air from the engine compartment. It just doesn't make sense... you upgrade to draw in more air, but that air is heated, less dense, and performance actually suffers because of it... kinda silly.

Now if someone comes up with a fender well type kit, where the filter is out of the engine compartment in some cooler air, sign me up. Till then, its drop in filter time.

 

The K&N filter does help hp a little over the stock paper filter. The difference becomes more apparent when you increase boost creating the need for better air flow. The problem I've found with the K&N filters, is (and I'm on my second one now, after a recall) it tends to slowly collapse over time under high boost. I just checked mine yesterday and again it's starting to be suck inside out. This is a supposedly reinforced K&N filter after a recall to replace my filter from the early 90's. I'm not really for them, but nor am I against K&N filters either.

 

It really doesnt matter simply because the air passes through one of the hottest part of the engine - the turbo. The air is heated up when it passes through and the intercooler is what really cools the air. That's why there is no cold air intake for turbo cars. The benefit the cone filter gives is quantity of air. The stock air scoop going into the airbox is like a pseudo ram-air system that gets as much air as possible into the airbox for the turbo to suck.

Rob

 

Coolguy, you seem like a "cool guy" from your posts, so I will not flame... but you couldn't be more WRONG.

I've been racing turbo cars for years now... there is a well known saying that a cold day is "turbo weather."

I live in Texas and I can't tell you what a HUGE difference there is in cold air/weather vs the typical 9 month summers I go through.

It has been proven that taking out the stock air box on some cars and replacing them with "cone" or "ram filter" intakes actually LOSE hp over the stock air box system.

True "ram air/cold air" induction systems do improve horsepower... the colder the air, the faster your car will go (most people understand the science behind this so I won't repeat it)... however just adding a cone filter inside of a "hot engine compartment" IS the silliest thing I can think of... unless you guys are buying "cold air/fresh air" induction systems, the drop in K&N filter will be your best bet.

I saw some killer looking systems in another thread that did draw in cool/fresh air and sealed the intake from the engine compartment.

HTH

 

You're probably right because I'm not 100% certain anymore. I had some mechanic explain it to me a couple years ago. Before, I used to think the same thing you do.

This is why i'm not sure what to think......After thinking about what that mechanic told me, I figured that on a cold night/weather the reason the car has more power is because of the temperature of the intercooler (much colder at night or in cold weather) and the density of the air entering the intake. That made sense to me because after driving, the intercooler hose that leads into the intercooler is REALLY hot so I figured the mechanic is probably right. Until it gets to the intercooler it's not fully cooled down. So, I dont know. When I installed the intake system in my eclipse, I noticed a small power increase and the boost went up about .5 - 1 psi. I figured the power gain was from the more air available to compress.

Thinking about it now, the temperature of the intake probably does make a difference even if it's heated up by the turbo because the air would be cooler coming into the turbo so the turbo wouldn't heat it up as high.

So, whatever.

Thanks for not flaming, i appreciate a friendly discussion even when someone is wrong.