Warm Air Intakes

[s2man]

Snax, I agree with all you said except one small bit. Yes, it takes the same amount of energy to run the engine regardless of the air temp. And yes, as the air warms, and its density lessens, we will need more throttle. to let the *same* amount of air in (in weight, not volume). But, we won't need more fuel to maintain a stoichiometric ratio with the less-dense air.

[kamesama980]

Originally Posted by s2man

But, we won't need more fuel to maintain a stoichiometric ratio with the less-dense air.

no, you need more fuel with more dense cold air. running the IAT sensor in a warm place with cold air actually going into the engine will result in lean running by the intake temp/volume math. the O2 sensor then compensates enough to prevent burnt valves.

with the concept I agree but ultimately whether the IAT or O2 sensor make it stoich, it's stoich and you aren't running lean anymore. if you want to inject X amount of fuel into the engine (as if WAI) you may as well shove in a matching amount of air so you don't burn valves. lean is just a reference to the A/F ratio not the total amount of gas. That being said, different cars have different results from this type of mod. some saturns respond VERY well to it. some cars it makes no difference.