Intake questions-, how far, and sensor questions Options

[mgnt232]

▼New Questions▼
I have a CAI for my ST, I feel like it gave me a little more power over stock, but it used to hang down on the tranni, and the heat shield use to actually get a little hot, and I assume the air isn't all that cold.
So I moved the piping around and got a little more to bend further. I got it almost to the driver side turn signal. With the invader kit, its a big opening under the turn, and thats right about where it rests.
I dont feel much of a difference from when it was in it original place and now, although it sounds better . I was wondering, do you loose power if you go too far with the CAI piping?
thanks-
Also My air intake sensor (temp sensor?) is wrapped like 75% in electrical tape, never noticed it before. But should I take it off? would this affect anything?




▼Cleaning Air filter question ▼
I know there are K&N cleaner kits.... but I dont think its worth the money to buy since its not really dirty.
I have a pressure washer, so I was wondering can I just lightly wash it, would that get the dirt and particles out?
thanks!

This post has been edited by mgnt232: Jun 16, 2010 - 11:39 AM

[hatchy_gt-s]

The reason your rpms increased is simple science colder air is more dense allowing for more intake. Thats also a good way to intake water which has a bad outcome. DO NOT USE DRY ICE!!! Dry ice is solid carbon dioxide (what you exhale), not only is it less dense, but it will make your CEL come on, and damage you car.

You really need to go back to 6th grade science dude

Edit: If you lengthen the pipe you want to decrease the size. If your car intakes 250cfm and your original pipe is 250cfm and you increase the length without decreasing the diameter you will have say a 350cfm pipe causing drag because your intake is at a -100cfm.
cfm= cubic feet per minute
^Thats basic fluid dynamics (thats like 7th grade science)
In conclusion decrease your pipe to a 1 1/2 or 2in pipe, and DO NOT USE DRY ICE!!!

This post has been edited by hatchy_gt-s: Jun 16, 2010 - 10:40 PM

[solidxsnake]

The reason your rpms increased is simple science colder air is more dense allowing for more intake. Thats also a good way to intake water which has a bad outcome. DO NOT USE DRY ICE!!! Dry ice is solid carbon dioxide (what you exhale), not only is it less dense, but it will make your CEL come on, and damage you car.

You really need to go back to 6th grade science dude

Edit: If you lengthen the pipe you want to decrease the size. If your car intakes 250cfm and your original pipe is 250cfm and you increase the length without decreasing the diameter you will have say a 350cfm pipe causing drag because your intake is at a -100cfm.
cfm= cubic feet per minute

In conclusion decrease your pipe to a 1 1/2 or 2in pipe, and DO NOT USE DRY ICE!!!

How does increasing the length change the flow-rate? The only place air is coming into the intake is through the filter, which isn't changing.

[hatchy_gt-s]

The reason your rpms increased is simple science colder air is more dense allowing for more intake. Thats also a good way to intake water which has a bad outcome. DO NOT USE DRY ICE!!! Dry ice is solid carbon dioxide (what you exhale), not only is it less dense, but it will make your CEL come on, and damage you car.

You really need to go back to 6th grade science dude

Edit: If you lengthen the pipe you want to decrease the size. If your car intakes 250cfm and your original pipe is 250cfm and you increase the length without decreasing the diameter you will have say a 350cfm pipe causing drag because your intake is at a -100cfm.
cfm= cubic feet per minute

In conclusion decrease your pipe to a 1 1/2 or 2in pipe, and DO NOT USE DRY ICE!!!

How does increasing the length change the flow-rate? The only place air is coming into the intake is through the filter, which isn't changing.

Think more area not flow rate. A pipe can only intake so much the 350cfm rating was for the pipe not the car.

Think of a straw if you increase the diameter w/o decreasing the length you have less pressure same as if you increase the length w/o decreasing the diameter.

This post has been edited by hatchy_gt-s: Jun 16, 2010 - 10:48 PM

[azian_advanced]

its not the length, its the number and the angle of bends

actually, the length of a pipe has an influence on power (longer pipe = more pressure loss), although very small compared to angles and bends.

Edit: If you lengthen the pipe you want to decrease the size. If your car intakes 250cfm and your original pipe is 250cfm and you increase the length without decreasing the diameter you will have say a 350cfm pipe causing drag because your intake is at a -100cfm.
cfm= cubic feet per minute

so what you're recommending is to match the volume of the original pipe with the volume of the piping in the CAI setup?
the only reason one would reduce the pipe diameter is to increase flow velocity which helps reduce heat soak from the engine, but at the cost of pressure loss.

[hatchy_gt-s]

Edit: If you lengthen the pipe you want to decrease the size. If your car intakes 250cfm and your original pipe is 250cfm and you increase the length without decreasing the diameter you will have say a 350cfm pipe causing drag because your intake is at a -100cfm.
cfm= cubic feet per minute

so what you're recommending is to match the volume of the original pipe with the volume of the piping in the CAI setup?
the only reason one would reduce the pipe diameter is to increase flow velocity which helps reduce heat soak from the engine, but at the cost of pressure loss.

You dont loose pressure if you lengthen and decrease diameter. If I have something that is 14in long and 3in diameter that gives me 99 cubic inches , and if I extend it to 18in with a diameter of 1 3/4in it gives me 99 cubic inches of volume. So if I have the same volume I have the same amount of pressure.
The equation for Volume is;
Pi x radius squared x hight
or Pi*r2*h
or 3.14*r2*h
The equation for pressure is;
normal force(14.7)/area=pressure
or F/A=P
or for cars 14.7/A=P
The only thing you change when you change length is distance ie the time it takes to reach the car.(I dont think you really want me to get into the math of that to)

This post has been edited by hatchy_gt-s: Jun 17, 2010 - 11:59 PM