originalmotorhead

Anyone try buzzing out a little of the plastic out between the bottom two vent fins on the Air intake side?
Also what about enlarging the hole that goes through to the actual Airbox ?

My car is 6 years old now so I am finding myself in the mood to tinker with it more.

So has anyone tried anything like I described ?


Tom
'00 guards red boxter

Boxsterund914

Have you de-snorked the intake? It seems to provide more flow.

arenared

I buzzed out the plastic. Don't expect any HP gains, though. I just thought it looked stupid. I recall the earliest Boxsters did not have that piece there, but it was added later possibly because the vents broke too easy or maybe for more of that rain/flood-proofing. Desnork is good for maybe 1HP and sound. Beyond that, the bottlenecks are elsewhere.

originalmotorhead

I desnorkled it and then later added the EVO intake but I'm wanting to get it as open as possible in there to get more air in. I don't drive the car in bad weather anymore so rain is not a big worry. I am tempted to cut the area out that separates the intake/vent area from where the air box used to be. I beleive there is still only a small two inch hole in the wall that sits between the vent area and the intake airbox. I'll have to look again to be sure...

tom

arenared

IIRC, behind the lower slats, it is largely blocked off anyway. You won't get more air in unless you get more air out. The next bottlenecks are in the airbox and the exhaust.

First986NJ

Air flow and volume are only issues if the engine is trying to pull more than the airbox will allow to flow. In this case, the engine is not able to pull max air volume and HP suffers. However, it first has to be capable of exhausting more air flow than it can intake. This isn't the case in a stock boxster, as long as the filter is kept clean. Desnorkeling only changes the intake sound, it really doesn't add any HP - this has been proven on a dyno. The intake air temperature argument doesn't hold water from a thermodynamics standpoint either. The air passing through the intake tract doesn't spend enought time in that area to be significantly heated by engine heat. Even the EVO intake is of limited effectiveness unless the exhaust and chip programming changes accompany it.

mooty

____________________
couldn't say it better myself.
it's a SYSTEM, you need lots of air in, motor needs to accept with with ECU reprograming, larger header (i mean correctly sized header), exhaust.... THEN, you will see some real gain. but aint cheap.

originalmotorhead

I have yet to Chip the car but I did remove the muffler and fabricated my own streight pipes. Car is rather loud at certain RPM's but sounds awsome when I am running it in the upper range. Headers, high flow cats, or a pair of cat bypass's were the next thing. Chip'n it will be last as it requires more than just me unbolting something.

Tom

Wilder

I'm sure the claims are overblown but is there any merit to this?

http://cgi.ebay.com/ebaymotors/ws/eB...3ADS%3AMT%3A28

arenared

That looks ridiculous. I'm sure you lose HP.

986Jim

Snake oil. They all relate water going down the drain in the circle with that. How water moves from one place to another has nothing to do with how something like air travels. Thats like saying if you make a jet noise you can walk faster.

I have the evo intake and it sounds amazing. Here is a short clip I did of it.
http://www.etdracing.com/jim/evom2.mpg - 4.4mb Right Click Save As.

Sorry for the funny camera stuff in the middle there, had to change gears and was holding the camera with that hand lol.

type987s

Sounds sweet,,,too bad you didn't do a before and after recording.
Was the EVO intake very hard to install?

986Jim

Yeha, the video wouldn't have even picked up the intake noise before to be honest. It doesn't really sound as loud in the video as it really is.

It depends on what you consider hard. I built my own motor in my Talon put it all back together and re-installed it in my car over a weekend and that was fairly easy to be honest. So easy is relative...

It took me 4 hours, almost 3 of which was getting to the point where you can remoave the stock air box. It's all pretty accessable from the top and you don't need to jack up the car or be on a hoist. There is one bolt for the air box you must get to from under the car but you just reach up and use your sockets. I could do it now in 2 hours I would say having done it.

If your squeemish about undoing bolts to the intake manifold and moving the throttle body around and stuff like that then it may not be for you. My arms took a beating tho cause the edge of the opening for the engnie access hole is quite sharp and they were laying over it all the time so looks like I got in a fight with a cat or something. Other then that, I would say yeah home install is totally possible for anybody with patients and home tools.

autobahnNY

Your right about that, my knuckles took a beating. I'd say the hardest part is getting the stock intake out, after that, everything is a breeze.

type987s

thanks for the advice...i'm not much of a wrench and guess i'll pay someone to do it. i assume installation on the 987 is similar and requires removing stuff to get the airbox out? does anyone know?

at a recent track day a 996 driver told me it was a 10 min install on his car :-(