but is there a difference though between moving/not moving and also temperature? i wouldn't expect a dyno to show any difference...w/a dyno you're not moving. but then again, i don't really know anything about dynos.

 

does anyone have a pic of where the resonator box is at and what it looks like. so i know im blocking off the right thing when i do it this weekend.

 

I dont have a pic, but its the hole directly behind the air filter. Take the filter out, and you'll see it. Are u putting in a better drop in air filter?

 

well i just bought the AUT rad cooling plate from S2X. I just got my car serviced last week and they replaced all the filters. I think I am going to keep the OEM filter for now and once it gets dirty i might get a K&N drop in, unless you or someone else suggests a different one??? From all the research I have been doing on intakes, I think I am just going to keep the stock airbox and close off the resonator box. the AUT cooling plate + stock air box seems sufficient enough for me.......atleast for now......

 

the filter I used was a Comptech air filter. Sponge time filter. Worked great. Way better than stock. Hey, PM me ur email so I can email ya pics of what my setup looks like if u want.

 

It sounds louder after you sawed the divider inside your airbox? How about the performance after your airbox become bigger without the divider?

 

didnt notice a difference really. The VTEC is a lil louder, thats about it.

 

Are you guys suggesting removing the helmholtz resonator in the intake tract?

That seems like (based on every other car I own) it'd take a chunk out of midrange 3000-4500 RPM torque, no?

I hooked up the temp sender last night, and got some interesting results driving to work with the lid on. I need to type them up, and i'll share, but i saw the posts above and thought i'd ask.

 

whats the helmholtz resonator? are you referring to the small box on the side of the airbox like i was asking about earlier?

and since when does our car have torque at 4k-4500 rpm? lol j/p

 

Temp results:

Equipment:
Thermometer shown here: (No part number handy, sorry guys. Bought it for my WRX, never installed it, repurposed it here!) http://forums.nasioc.com/forums/showthread...85&page=1&pp=50
External sensor placed in airbox behind large side of filter's flange to eliminate readings from moving air changing things.
New WIX air filter.
Airbox Lid Installed
Engine completely stock.
No aftermarket cooling trays, etc.

Start temp:

Airbox:
56.4
Ambient:
58.4

End temp:

Airbox:
82.5
Ambient:
internal sensor fouled by cabin heater, estimate 60-62 degrees.

So I woke up this AM, walked outside, turned on the car and took the Start temp readings. I let the car sit until 2 bars were showing, dropped the top, and left for work. The entire way to work (47 miles) I headchecked the thermometer, and came up with some interesting observations of the stock setup.

My drive to work is as follows:
I leave my driveway, and live on a 55mph road. The first stoplight is 5 miles away.
I then sit in medium flow traffic light stop and go.
I have 10 miles on a freeway at 55, followed by 20+ miles of freeway, the first 10 of which are stop and go.
I get off the freeway, and have light traffic in-town driving.


While the car was warming up, the airbox temp consistently remained at 56.4, 2 degrees below ambient. It remained within 1 degree of this for the next 5 miles. At the first stoplight, there was under a degree of temp gain.

I hit VTEC leaving the light, Immediately the temp spiked ~5 degrees, and I had only gone to 7500. Interestingly, this spike was observable ANY time I exceeded 6500 RPMs throughout the drive. The problem is, it didn't cool back down after I lowered RPMs.

On average, it seems the temp climbed .1 degree in the box for every 1 mile I drove below 60mph. The only time the box ever dropped was when I exceeded 60mph. Between 60 and 75mph, the box shed temperature at a similar rate to it's lowspeed gain, approximately .1 for every 1.0 miles.

At stoplights in the first 10 miles, I observed nearly 0 soak/creep at lights. At the second to last stoplight before work, I observed a FOUR degree climb while waiting through a light cycle. It seems the hotter it gets, the quicker it continues to climb.

My drive home is significantly more taxing on the car, I'll update this with readings when I get home. Less freeway, and about 16 miles of backroads.

Just thought that this was some interesting info, the way temps climb under VTEC makes me wonder if the air is getting heated by all the turbulence en route to the filter, as i don't believe the coolant temp spikes that much each time you exceed 6500. We'll see what happens when I get to drive home at a much less sedate pace tonight. Either way, the 25 degree temp gain really leads me to believe that there's some gains to be made in temp control on the box itself and/or the radiator shroud.

Thoughts?