does it save on gas
Perhaps you are not aware of what an individual throttle body is? Individual throttle bodies are not common. You only see them in high performance cars. The standard is and has been a single throttle body. Perhaps you are thinking of intake runners? List me off the Toyota, Saturn, Vauxhall, Chrysler etc. engines that came with individual throttle bodies, if you would be so kind. .45Colt 14:09, 15 February 2014 (UTC) — Preceding unsigned comment added by .45Colt (talk • contribs)
MUST BE GENERALIZED!!!!
Article in general.
This article needs a lot of work. There is an article about the intake manifold which is where half of the stuff on this article belongs. The intake system has nothing to do with resonance; that is the job of the intake runners. Some car companies created intake MANIFOLDS with variable length runners, NOT variable length intake piping, which is what this article seems to be saying (BTW, Toyota also did this). Car companies do NOT "carefully tune" the intake to aid performance. If you are lucky they try to make it as un-restrictive as possible...within a certain cost. There is a loose rule for the amount of volume and width you want for the expected air flow of the engine it's attached too, but it's built to cost and is usually far from ideal. The ideal intake piping is NONE. That is why race cars don't use any. If you NEED it to mount and air filter, to get cooler air, or because you are running a turbocharger, the best tubing is short, and smooth. How often do you see short, smooth intakes on factory cars? Not often. Aftermarket intakes (the decent ones) are figured to restrict as little as possible, but they still hurt performance. Also, they don't measure intake flow at the ports last I knew...they measure intake MANIFOLD flow at the ports on the flow bench. Not the same thing at all. Next, the picture of the Mercedes seems to be showing one of the brake-cooling vents. Even if that does go to the air intake system, it is not part of the intake itself and is very confusing for someone who wants to learn something. Third, "buffeting and vibration" is turbulence, and it's bad. It is not what you want your intake to do. -So, factory intakes = designed to make the car as quiet as possible, and hopefully not be too restrictive (they also try to make the volume big enough that throttle response is hurt, but not so big that the airflow slows down too much.) -Intake manifolds = where resonance and tuning takes place, and are what you measure on a flow bench. -An intake on a grill =/= an intake system, even if it connects to it (which is very rare). -Porsche and other = variable length intake runners, not variable length intake piping. -buffeting and vibrating = bad. -restriction = bad -intake piping = restriction -well designed intake piping = less restricting than some A.45Colt 14:46, 15 February 2014 (UTC) — Preceding unsigned comment added by .45Colt (talk • contribs)