I just hacked my air box on my I30t and boy what a difference. Not really in performance, but it sounds really cool. It also sounds faster, now for the real performance parts....

 

It's like yelling with your hand covering your mouth versus uncovered: you'll definitely make more noise uncovered and attract more attention, but you may not get where you're going any faster.

 

In my view, its sacrilege to go hacking the air box on an Infiniti I30. To make what was originally a near-luxury sedan into sounding like a garbage truck is ludicrous. Just my $0.02.

 

You've got some real issues with hacking airboxes eh?

I don't really see why, you're just opening another hole for air to enter in. The same thing the snorkel does.

Airboxes let air enter the combustion cycle... you are letting in air by making a new hole. "OH MY GAWD YOU ****ED UP YOUR CAR" (not what you said, but what many people feel about hacking airboxes, seemingly...)

 

There was another thread in the 4th Gen forum last week with some of the respondents bemoaning the fact they ever hacked their air box in the first place, while others were going to try to glue it back together. To each his own, but it strikes me that a hacked air box is something that one would tire of/grow out of very quickly.

 

i don''t regret it. Its not like it is expensive to replace.

 

hahahah... good anology!

 

I just wanted to say i took out the bottom part, (didn't cut a whole in it) so that way i could easily put it back to stock

 

I love that mod yea the car feels a little slower but oh well it is still a rocket and when the y-pipe goes on I wont care.

 

does anyone have experience of knowing how it sounds compared to the Injen CAI? or a sound clip of a hacked air box?
thanks if anyone can help

 

if i dont floor it, i cant even tell its hacked. kinda nice bc it doesnt growl all the time - just when i want it to.

 

so, how did you keep the filter in place? make sure it doesn't fall off place, or else any dirty enters your engine and you are screwed.

 

dont be cheap buy a real intake

 

"real" intakes perform worse than stock airbox.
dynos are on the org

I hacked my box and I just bought a new one because I got sick of the noise.

 

the noise is intoxicating!!! i like the fact that you can't hear it while crusin', but at WOT i don't how it doesn't give everyone wood.

 

If I could go back, I wouldn't have hacked it. It feels slightly slower, and the sound of my y-pipe and catback overpowers the intake anyway, so I can't even hear it now.

 

flip your box (top) and use K&N with black zipties, no sacrifices. If for some reason I need to put it back to stock I'll flip the box, add the bottom, connected the piping and be done. It seems win win to me. The added intake noise =

 

my friend with a Golf V6 hacked his and it sounds badass. now where should i drilll the holes on the airbox

 

The airbox stays intact, you just remove parts of it. The lip holds the filter in place.

YOU STILL HAVE A FILTER.

You are just as screwed with an aftermarket/stock intake if something gets through, same exact thing. Actually, a cone filter has a better chance of letting **** in since the filter is 100% exposed to the engine bay, you are still shielding the panel filter by hacking the airbox.

30k later my K&N is as clean as the day I hacked my airbox...

 

umm...what would a K&N typhoon do to our cars...sorry to steal the thread....

 

Your opening another hole for HOT air to enter in = potentially bad for performance. Ever heard of cooler more dense air improves performance? What do you get when you let in the opposite???

The hole that you get from hacking the box isn't the same as the snorkel. The snorkel catches cooler air from the outside. The hole you've just hacked is doing the opposite.

Now I can see this guy putting the pieces that he hacked from his airbox back together.

 

I don't think hacking the box is really a HP mod,(obviously) but I do love the sound, and it's free, one of the best free things that I know of!

 

Heintzmart
but where do you drill the holes in the airbox on top where it come off or on the bottom

 

It does more negative than good for the sake of sound! Check what I've done here.

 

drill anywhere on the bottom part of the box

 

I dont see how the snorkel catches cooler air b/c the rubber seals on the hood seal air from outside

 

You don't see it but air does go thru the gap between the hood and the car...trust me! The scoop catches some.

 

This Thread Is Dumb

 

I drilled a half inch hole in the bottom, but i know that's not enough for a big increase in sound at WOT, but it still sounds deeper than stock.

How big will the hole have to be to actually make it sound like a beast? Even when i'm not flooring it, but just cruising/idling?

 

To make it louder just cut off as much as you can

 

Good try, but incorrect. while letting in cold air is better then warm air, the performance gain/loss is min. tests were conducted, and while moving, air temp does not have a factor in HP.

 

Lowering air temperature increases air density, and the denser the air, the more it can be compressed. Compressing the air causes more to enter the throttle body and manifold which, in turn, signals the ECU to increase the fuel/air mixture going into the cylinders, and that increases HP output. However, you have to lower air temperature by at least 13-15 degrees to achieve a maximal gain in the neighborhood of 4-6 WHP.

Yes, that gain in terms of raw HP is minimal, but the gain in torque can translate into a time savings of a few tenths of a second at the track, which can be the difference between winning and losing.

Increasing air temperature not only reduces air density, but also increases air turbulence and resistance which negatively affects performance by reducing the amount of air going into the throttle body.

Drilling holes in the stock air box may increase air flow, but that flow may be erratic; i.e., create more turbulence in addition to more noise.

 

Did I mention HP gains in my last posts??? No!!! All I was saying is the fact that cooler air helps instead of letting in hot air. Did I throw out some mystical numbers??? No!!!! Read my posts again.

I didn't even mention the word gain until now.

 

I just hacked my air box two weeks ago and didn't like the results so glued the thing back together and I'll never go back. In my opinion, it felt like I lost performance and lost significant throttle response. I should have never tampered with it in the first place.

 

actually, maybe YOU are the one that needs to read your post again. here, I'll even provide the link for you...

 

and like I previously stated... there is hardly no diffrence WHILE THE CAR IS MOVING. when in motion, the air in the air temp in the engine bay remains constant. However, when standing still at an idle, the temp raises by quite a bit. unless you plan to go down the 1/4 mile while your in "park" then your argument is fruitless.

 

The air temp in the engine bay remains constant at any speed, including standing still. By that, I mean that air temperature does not vary within a given velocity.

I do not know of which argument you speak, but you are trying to say that the air inside the engine bay is the same temperature as the air outside of the engine bay -- even when the car is moving, then there is a simple way to confirm whether you are right or wrong.

A simple test using an indoor-outdoor thermometer (one that records highs and lows) can do that. I happen to have one of these thermometers in my home, and this evening, I will perform the following test:

1. When the car is stone cold, the outdoor probe will be placed under the wheel well at the site where true CAI's place either the intake tube or the filter itself.

2. The indoor thermometer will be fastened directly to the the air box: close to the location inside where the probe is outside, away from any heat-retaining parts, and positioned where I can read it without removing it. I will then reset the thermometer which will set the minimum and maximum readings to be equal.

3. I will run the car, at idle, for 5 minutes, or until the engine has reached its operating temperature as indicated on my temp gauge.

4. I will record the maximum indoor and outdoor temperature readings on the thermometer.

5. I will take the car up to 45 MPH and keep it at that speed for 5 minutes.

6. I will then stop the car and record the minimum indoor and outdoor temperature readings.

When all is done, I will post the results here (and elsewhere).

Ladies and gentlemen: place your bets!

 

oooo sounds like a science experiment to prove all n00bs wrong

 

you rock dr-rjp...I can't wait to see the results

of course, Florida results will be different from Minnesota results. We are the keepers of cool air!

 

P-p-please send some of that good Minnesotan air my way!