The goal of the fresh air intake system is to warm the air so the fuel will vaporize better. Liquid gas doesn't burn. It just goes out the tail pipe, wasted. That's why we needed chokes with carburetors. We dumped in a lot of gas in hopes a high enough percentage would vaporize to make the engine run smoothly.
The idea behind some air cooling filters is the colder air will be more dense so more can get packed in the cylinders, then you can add more fuel to go with it to get more power. The same thing can be done by pressing the gas pedal further. That may have some validity on other brands of cars that use mass air flow sensors in the air intake tubes. They use air temperature and flow to calculate volume so the results of an air cooling system will be noticed by the sensor. Chrysler is the only manufacturer that has been able to make an engine run right without a mass air flow sensor. They still measure the air temperature but engine vacuum is the main criteria driving fuel metering. The Engine Computer will still correctly calculate the fuel needs even when the air is more or less dense.
One thing that might confuse the computer is the discrepancy between the intake air temperature sensor's readings and the battery temperature sensor's readings. Those two will be the same when the engine has been off, and the computer expects them to be the same when the engine is running.
Don't know if that's the answer, but thanks for the information gregery. The world of auto manufacturing is extremely competitive. You can be sure if there was an inexpensive modification that would result in more horsepower or better fuel mileage than their competitors, the engineers would have incorporated it.
Saturday, December 1st, 2012 AT 9:10 AM