What is the basis for running a CAI ?
Some will say the colder , denser air improves combustion .
If that is so , then why do we Northeners have a more difficult time starting our engines in the winter ?
Why is our MPG lower in the winter (and don't use that "Winter formulated gas" excuse either)
There was/is a "chip" one could buy for older engines (which was only a resistor) one could install which fooled the PCM into thinking it was colder air drawn into the intake.
All this did was make the PCM dump more fuel in the engine , hence richer air fuel mixture.(sometimes more power gain) Gas mileage took a dump.