Drilling holes in air box
04-01-19, 02:00 PM
#2
Pit Crew
Loosen the screw that holds the clamp on the air hose that goes to the throttle body. Remove the electical connectors that go the the MAF sensor and other sensor on the air box. Pop the top off, like you're changing the air filter, then remove the air filter. You will then see 3, 10mm bolts at the bottom. Remove them, pull out the airbox, along with freeing the accelerator cable at the back of the box. You will need to maneuver it a liitle bit where it mates up with the air horn on the inside fender. There may be small variations in your particular vehicle, but you'll figure it out. This would be a good time to clean the MAF sensor as well.
04-01-19, 05:02 PM
#3
Driver
Thread Starter
Loosen the screw that holds the clamp on the air hose that goes to the throttle body. Remove the electical connectors that go the the MAF sensor and other sensor on the air box. Pop the top off, like you're changing the air filter, then remove the air filter. You will then see 3, 10mm bolts at the bottom. Remove them, pull out the airbox, along with freeing the accelerator cable at the back of the box. You will need to maneuver it a liitle bit where it mates up with the air horn on the inside fender. There may be small variations in your particular vehicle, but you'll figure it out. This would be a good time to clean the MAF sensor as well.
04-01-19, 05:03 PM
#4
Driver
Thread Starter
Drilling holes in air box
Where should I drill my holes in the air box? I’m trying to make it look stock still, but at the same time trying to get maximum air into the engine.
Passing California’s SMOG visual inspection is key, and modern problems require modern solutions LOL.
Passing California’s SMOG visual inspection is key, and modern problems require modern solutions LOL.
Last edited by simplecar; 04-01-19 at 05:49 PM.
04-01-19, 05:48 PM
#6
Driver
Thread Starter
04-01-19, 06:50 PM
#7
Lexus Test Driver
Which will be read by the AIT that send it to the ECU which then adjust AF mixture.
If more power is what you're after, HOT air equates to less power over COOLER air.
When my Acura GSR was force fed, i still used the stock airbox but routed a self made intake pluming of the box to an open source for cooler air.
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04-01-19, 07:21 PM
#8
Are you failing the emissions tests? How will "maximum air" help?
04-01-19, 09:05 PM
#9
Driver
Thread Starter
Maximum hot engine air that is.
Which will be read by the AIT that send it to the ECU which then adjust AF mixture.
If more power is what you're after, HOT air equates to less power over COOLER air.
When my Acura GSR was force fed, i still used the stock airbox but routed a self made intake pluming of the box to an open source for cooler air.
Which will be read by the AIT that send it to the ECU which then adjust AF mixture.
If more power is what you're after, HOT air equates to less power over COOLER air.
When my Acura GSR was force fed, i still used the stock airbox but routed a self made intake pluming of the box to an open source for cooler air.
04-01-19, 09:18 PM
#10
Driver
Thread Starter
I'm not failing emissions tests. I just want to do this to see if I get better mpg and/or performance. I'm not to worried if the results aren't good because this car is getting traded in by the end of this year.
04-02-19, 05:41 AM
#11
Pit Crew
As a pilot (airplane), one of the things that was focused on early in my training was the effect of the Air Temperature on Air Density. Taking off from an airport at 75 degrees could be no problem, while that same airport at 95-100 degrees could leave you in the weeds at the end of the runway, or dead. I don't think there would be much difference in where you drilled on the airbox, the air in the engine compartment would be equally hot...and well above the ambient air temperature in which you are operating.
04-03-19, 06:28 AM
#12
It's a pointless endeavor. It will help in no way. The stock box flows sufficient air and is designed to grab from cooler outside air than in the engine bay. If you drill holes, you get hotter air and all of it hits the air filter anyway and the airflow to the engine remains totally the same. Don't waste your time.
04-04-19, 08:15 PM
#13
Intermediate
Agreed that this exercise is just a waste of time and the destruction of a good air box. There is a reason for Cold Air Intakes and why turbo engine uses an intercooler.
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