Cleft_Asunder

iTrader: (1)

I don't understand why there's a huge black box connected to the front of my intake. It looks as if it serves no purpose other than taking up space and being a repository for dirt. (see 8)

http://www.hondaautomotiveparts.com/...13S040_B01.gif

johnbt23

iTrader: (8)

the point of the resonator is to lower the intake noise.

Cleft_Asunder

iTrader: (1)

Yes but I wonder to what degree. I'm going to take it out and see. If it barely makes a difference or none at all, I'm shelfing it. I need the space. And also, if I curve the intake to a hot location, I might be able to get better MPG as gearbox said. Err, I wonder if there will be an issue with engine heat because of this --I mean if I remove the whole intake tube all the way to the air filter box.

Christafurrr

It makes a lot of noise without the resonator in

Unevolved

Better MPG? With intentionally hot air going into your engine?

johnbt23

iTrader: (8)

yeah, i don't get that either....

beadebaserr

iTrader: (7)

just take it out, you might get better gas mileage and the noise won't be that bad.

and yes, warm air = better MPG.

Cleft_Asunder

iTrader: (1)

Computer notices engine is running hotter, and so less fuel is pumped into the system. From what I recall.

Cleft_Asunder

iTrader: (1)

The noise isn't in the category of bad, it's definitely good! I'm not into custom exhaust sounds at all, yet removing the resonator and pipe has made it sound really cool. 90% of the time it sounds stock, but upon higher rpm, there is a very nice pur. Love it.

Da1lyDr1ver

iTrader: (6)

i believe the concept of getting warmer air into the engine will increase gas mileage because the computer will pick up the air intake temperature and adjust the timing so the car runs more lean. more lean = more MPG.

Unevolved

True, but it also takes away what little power you have.

beadebaserr

iTrader: (7)

no reason to drive a stock 97 dx like a racecar.

Cleft_Asunder

iTrader: (1)

I do notice a slight decrease in performance. But, I don't mind. The 5th gens had less HP and got better MPG.

6th gen little power? I think they are peppy as heck, but when it comes to torque and uphill... forget about it.

KTciv_03

iTrader: (1)

with gas prices the way they are who does drive like a racecar daily? i know i dont. good job being creative and bettering your mpg at the same time. +1

07exNavi

The huge black box is there for throttle response. It keeps a measured amount of air in the intake system. So when you step on the gas it has something to draw from. When you take that away you may get better performance at the top of the rpm range from slightly less restriction but you lose performance in the bottom range because there it less air immediatly available for the motor. That is why you lost a little performance.

These intakes are there for a reason, they have hours and hours of R&D to make them streetable. Some things may inhibit performance but unless your going to go to a cold air kit your probably better off overall to leave it alone. Just my oppinion.

Tokoyama

when i had my civic i removed my resonator for maybe 3-4 months before i bought an intake, not really any dramatic effects. it is a little bit louder, but not really, you'll only hear anything different when you go WOT, driving normally you wont hear any difference. as for saving gas, i found myself burning more gas because i liked hearing the engine growl, which resulted from me pushing on the gas more often. I did notice a very small loss in power, but i compensated by telling myself my car wasnt speed racer to begin with so losing a few horses shouldn't matter.

gearbox

iTrader: (95)

resonator controls noise but it also does something to the air to match the intake resonance frequencies. its not useless, in fact many have found that on a dyno, the resonator actually makes more torque below 3k rpms. so be aware power will drop a little, but you are also drawing in hot air straight from the engine which will give slightly higher mpg. alot of mpg nuts will actually route a hose directly to the header to get the warmest air. on a civic, there is no chance for engine malfunction cause the ecu will adjust everything for you. if you are driving slow anyway, i doubt you would notice a difference.

Cleft_Asunder

iTrader: (1)

It's particularly useful in the winter time during which the intake tube gets cold air. Instead it will still get warm/hot air from the engine.

ONE7thREBUILT

Warn air also increases fuel efficency because of air density, its more a matter of thermodynamics than it is because of the computer.

Unevolved

No, it's the computer compensating for thermodynamics. Warmer air is less dense, thus contains less oxygen than the same volume of colder air. The computer adjusts for this by adding less fuel, hence the higher MPG.

Less air, less fuel, less power.

Personally, I'd rather just back off on the throttle to add a little time between fillups. I realize we don't have much power, but its almost a safety issue sometimes driving on the highway. I don't race at all, but I like my car to be safe to drive, as well.

gearbox

iTrader: (95)

well yeah less oxygen molecules per unit area in hot weather. same is true at high altitudes

sl33pyriceboi

iTrader: (3)

very very hot air...especially if you have some kinda SRI or CAI...the metal/alum gets REALLY REALLY hot...

and all that is heating the air traveling in ur engine.

metalviper

iTrader: (13)

ehh i took mine off and put a plastic tube into the air cleaner box

gearbox

iTrader: (95)

the metal tube only feels hot to the touch. its really the same temp as the engine bay. i measured mine at 115F, same as surrounding parts. and this was when outside temp was 80F. not really a big increase, prolly just lost a few hp but gained some mpg lol. the air moves so fast that i doubt the pipe would have time to heat it as it moves. and you are drawing in same hot air from engine anyway so it wont matter.

ONE7thREBUILT

Did you miss the leader "more"?

wheelspinLX

Without that resonator my car has an even bigger reservoir to draw air from called the entire atmosphere. I don't get your reasoning. It's only there to cut down on intake sound.

Unevolved

Not at all. Were we not to have a computer, Thermodynamics in this sense would be incredibly detrimental to the engine, causing to to run incredibly lean, probably destroying the motor. Since we're talking about more or less a computer adjusting for thermodynamics, not thermodynamics themselves, I think thermodynamics are more pertinent.

ONE7thREBUILT

Words-->(your ears)-->Words.

I hear your point though.

Unevolved

I don't get it.

(Not trying to be an ***.)

metalviper

iTrader: (13)

in one ear and out the other
lol