Engine Plans for Stock Air box Modification

spark plugs were white, couldn't see anything but white on the tips

sounds specific to your vehicle, do you think youre the first person to install an intake on your corolla?

could it have been a faulty install or damaged sensors?

Cutting the box in those places will make it so it takes in a lot more air that stock right? Would that give a noticable gain? Is your car auto(3/4) or manual(5)?

Plans for Stock Air box Modification

Ok these are really shitty since I used paint to show where I will use a dremel to cut. The main concerns I have are Cutting to close to the screw holes and cracking that part open, and if I cut it it might crack all over (it is plastic). First pic is where I plan to cut it, looking in



2nd pic shows how far up i can cut, the border that goes around it is what the air filter stays in.



Last pic is the same thing as the first just flipped upside down.



Yes I know this is really cheap, but Im looking to an alternative for a sri. I don't like how lean it makes my car, and this will filter a lot better. After I do this and get my electric cutout installed I'll get it dynoed again. If possible Ill see if I can get a dyno with the weapon r, and then with this.

If this way doesn't work, I'll jimmy a way for the top part of the box to sit with the filter strapped on somehow.

the only reason your vehicle would go lean is because its injesting more air than its sending fuel for...... no matter what you do to the intake, cutting or replacing, youre making it flow more air.........

honestly running lean makes the most power, i highly doubt that if you went lean you went to a dangerous lean condition...... just throw on that weaponR youve got and save your stock parts

yes im the only one, no its not a faulty install, unless the maf sensor that doesn't line up with the holes makes that much of a difference.

using your idea for something like a Ram air hood would be cool.

I did somethin like this to my 1zz-FE.

I tried two different setups:

1st one i did i actually took out that bottom section of the box pictured and just attached on the panel filter to the top of the box. That increased the airflow and gave the engine a real nice sound. However it was taking in warm air from the engine hence i put the box back in.

The setup I have now works a lot better. I crawled under the car and had a look to where the piping for the box went. In led into a tank of some sort. I saw no real use for it so i took it out and ran a pipe there instead. The air now flows through this and directly into the box. So now its only taking in cold air and the filter is sheilded. Only thing is the engine is a bit quieter now. No matter, it still gets a better perfomance boost.

if you look carefully at the top of your airbox, you'll see that the elbo that goes to the throttle body is easily cut from the box.. once you cut it off, you can just install a cone filter right on that elbow, then drill a hole for the one other sensor that used to plug into the non "elbow" portion of the airbox.. (this assuming you have a VVTI engine, with MAF)

i had a K&N on my stock airbox elbow for 6 months.. felt no different than the $150 Injen intake..

honestly, it's all about the filter. keep it clean, and you're good to go.. just don't forget that although your'e de-restricting your air flow, you're also sucking hot air now.. not really all that great IMO.. CAI is where it's at.. stop sucking that hot engine air.. it's a good 30-40 degrees hotter under the hood than ambient temps..