Well there are always people ranting and raving about this crappy K&N intake for our cars and so forth. I bought an 03 in april and have been dealing with the K&N for some time now. The things I noticed about this intake are pretty simple, it sucks. The carbon fiber peice that goes around the filter is just annoying and gets in the way no matter what not to mention all the stalling problems the car has had and really seemed to not pull as hard as the car should. So after getting fed up with the previous owners pretty dumb choice to have this intake on the car I called upon the good old boys from Buschur for their intake kit.

Got the parts with rather quickly considering I only live like 35-40mins from the shop and always recive my parts quicker then expected. So I head out to the garage and get the K&N off the car and take a look at why this thing is so annoying and makes the car run bad. Below are pictures of the BR intake next to the K&N and you can clearly see the difference.








It's obvious that the little flange that hangs down in the middle of the pipe is part of the reason the car runs so rich and will stall frequently, not to mention the black plastice peice that bolts to the mas. As where the BR intake has no restrictions and the mas bolts flush with the filter!

Thanks Buschur Racing for the quality peice, and great customer service!!!!!

 

Not to mention the clamps on the K&N intake use allen head bolts which are seriously annoying to take off.

 

my personal thinking is that there is nothing wrong with the pipe itself, all the issues people have are caused by the filter /adaptor.

what happens AFTER the air is metered, ie past the sensor, has no effect on the afr or any other aspect of the motor's performance.
Now if the air is metered wrong, then you can have issues, but that happens between the sensor and the bumper, not the sensor and the turbo.

the one issue you might encounter is if the hard pipe vibrates the sensor at a rate that disrupts the sensor output. then you might have the tail wag the dog.

 

Glad to hear you are happy! What is that weird piece sticking down inside the K&N pipe?

I never noticed that before.

 

K&N make good intake for your truck,

not your Evo

 

What kind of cone filter does the BR intake use? Is it oiled?

 

Nice choice on the intake (and the beer). Any job worth doing is a job worth doing with a beer - that's what I always say.

 

It's already been proven that an improper MAF pipe can throw off the MAF readings. Look at MalibuJack's findings. The Typhoon itself is known to cause problems because of its MAF pipe.

 

Seriously dave, I have no idea why they would put that flange inside there.. its right next to the bov return and just simply doesnt make sense. ITs almost like k&n lost their mind when they designed this intake. The most important thing to remember when making an intake is to make sure there is a clean free space for the air to travel(obviously they forgot)


thanks again for the quality stuff

 

two things, I don't care for the K&N but I see a lot of silly thoughtless thinking going on about that intake. until you can show me how something downstream can distort something upstream I am not going to believe you or MJ.

Concerning the appendage inside the pipe, it looks like an appropriate place for a baffle to keep air from being confused by the bov return hose. in this case i rather believe it was bad engineering or poorly executed aerodynamic design.

 

Just got rid of mine and also got the Buschur! Lot better!!

 

Im having a hard time trying to understand your comment here..

Your saying that you dont belive something that happens "after" the mas could affect the way the car runs? If your thinking that way, have you ever driven a dsm/evo with a vented to the atmosphere BOV? it can run like **** and buck between shifts also causing the car to run rich. All of which happens DOWNSTREAM....Show me any intake for an evo that has the same or similar design and ill be amazed, but dont get me confused im not saying the baffle is the 100% reason why the intake is not very good for our cars, i also belive the plate that bolts on the mas is also part of the problem too.

 

you have a good thought there, but all things being equal, once the air gets past the sensor the turbo is going to do a lot more damage to the purity of the flow than the pipe ever did.
it is the sensor readings that cause the trouble with aftermarket intakes, are you telling me that after the sensor has seen the air and the air has been sucked away, that air now comes back to fiddle with the sensor? or that somehow the air flow is now not "clean" enough, to be sliced and diced by the turbo, and the intercooler, for the engine to use well?

let's say we took the sensor out of the loop, went speed density, do you think the k&n pipe would make the car run poorly?

 

thats a whole different ball game, those type of sensors allow you to use bovs that are vta without causing problems with idle surge, bucking between shifts and stalling at idle. And if you where to switch over why would the baffle be needed if your not running a bov thats dumped back into the intake? chances are your going to be running one of those big moster 4inch intakes that dont even have a return for the bov. My whole point on the baffle/restriction, is that its just not needed and k&n should have never considerd this.

Im willing to bet if you somehow removed that baffle, and bolted on the br filter that the car would run much much better and not stall @ idle anymore. The k&n intake sucks.

just curious, do you run this intake on your car?

 

Uhhh,
If the downstream obstruction causes the flow charateristics to chagne upstream... like due to dead zone in the flow forceing the upstream air around the dead zone... that might be enough to disrupt the sensor. Think about watter hitting a flat wide obstruction at a perpendicular angle, there will be a deadzone that extends infront of the obstruction some distance...

Maybee not so much with a flapper or hotwire meter but since the evo uses a K.V. based meter I think it is more sensitive to disturbances in the flow.