Another round of intake discussion? Oh NO.
This round will represent our final thoughts and reflections. Many thanks to your input on this rather interesting topic.
I wish to make an openning statement and post some questions:
In part one we extensively covered cold/warm/hot air induction/routing/baffling/filtering/shielding or lack of. So much for that! The air is in regardless.
Now we know that a computer program controls the air-fuel mixture on our cars. and the most important single piece of information needed (by this copmuter) is the how much air/quantity of Air mixed with the how much fuel and thus a mixture and a spark.
And to further complicate and/or deal with this magic mixture; BMW engineers have unleashed their armada of MAF, TPS sensors, fuel injectors, precat O2 sensors to name a few. That is to regulate, to control, to deliver, and to fine tune this mixture alas O2 sensors.
Now we're witnessing a new shift in our vocabulary; a shift towards using words like rich/lean mixtures', O rings, injectors, vacuum leaks etc etc
Questions for further reflections:
How does BMW measure the temp. of this air?
Measured by a sensor? Yes but where did BMW settle on its location?
Is it at the inlet where everyone (on this forum) believes it is a cold air?
Or is it at MAF right after the Air box filter? $300 some dollars piece of electronics!
Whatever we decide on; we ought to examine the following questions:
1. Does the air at the MAF represent an accurate measurement of the ambient air?
2. Measuring the air at the MAF location, is it a good practice to assure CORRECT air/fuel mexture under the spark plug?
3. If I move (for the sake of this argument) the MAF from its current location right to the tip of the inlet; what would happen other than loosing it in a flood?
Would it really measure the actual ambient temp.? Would that be a more accurate measure to the actual outside/air temp. i.e. just like the outside temp indicator on the dash?
4. Finally does the BMW computer REALLY CARE about variation in the outside temp. Now think a BMW exported to Saudi Arabia 120 degrees VS. Another exported to Russia 40 degrees below in winter??? Would the latter have some sort of heavy duty air pump to preheat?
I would love to meet one of these engineers face to face; his/her lunch/dinner on me right here in NJ!!!! any one out there???