hey i wanted to put a cold air intake to boost the power on my freshly rebuilt 2.3 and was wondering about what to do with the IACV that sits on the left side of the airbox?

thanks !

 

One member told me this :those hoses are vacuum lines that should operate a air diverter in the air intake before the filter. What they do is when the engine is cold it pulls warm air from off the exhaust manifold to help the engine get warmed up then closes to allow cool air into the intake. If you follow the one that does not lead to the firewall you should find the air diverter


i am looking to do the same thing :) a for sure answer would be awesome !!

 

Have you found an answer to this question in the last 12 years?
I also have a Ford Ranger with 2.3L that still has the stock Air Box that want to replace/upgrade.
I really want to know what I should do?

 

Reason there was no answer is because ALL fuel injected Rangers come from the factory with a Cold Air Intake
If you look at the air box, down at the bottom front you will see the air tube that goes to the Rad support and a hole that pulls air in from behind the grill, cold air
So basically a waste of money, and you can lose power if new CAI is not installed properly

Basic Rule Of Thumb
If you can HEAR air being sucked into an engine then you have turbulence which reduces power
But some like that noise, which is fine, your vehicle your choice
So add a 3rd party air intake, just do it because you like the sound

Like glass pack mufflers, if you like the sound just do it


Engines make power based on displacement, on how many Liters of air it can pass thru every 2 RPMs
2.3 liter engine can pass thru 2.3 liters of air, at wide open throttle, every 2 RPM

Gasoline's air fuel mix is 14.7 to 1, this is a WEIGHT RATIO
14.7 pounds of air to 1 pound of gasoline
14.7 grams of air to 1 gram of gasoline

The amount of gasoline you can burn at 14.7:1 decides the power you can generate
Adding more gasoline just floods out the engine
Adding more air means you can then add more gasoline so get more power
Turbo and supper chargers FORCE more air in, so more gasoline can be burned so more power is generated

Larger displacement, say 5 liter engine, means more gasoline can be added so more power generated
Its all about the amount of air an engine can pass thru

Colder air is denser, heavier than warmer air, because air/fuel mix is a WEIGHT ratio, more gasoline can be added to colder air than warmer air
Thats how CAI adds power, not much but not 0 either
And why Ford and other car makers added CAI when they went to fuel injection, they didn't have to try and feed air to a carb in the middle of the engine bay any more, lol