Quote:
Originally Posted by Jakins
So what you are saying is better air flow with a bell mouth will increase milage because more air is sneaking past unmetered? Also I'd like to note, I know alot of the N/A Honda racer dudes are big on the helmshold chamber or "whale penis" intake because of how effecieantly it pressureises the air and forces it In or something like that. But if we are talking about intake flow then wouldn't exhaust flow help as well? Because right now the way I'm doing it is. An this is what I've understood through other things I've read on here. That with fuel injected cars it doesn't matter how much flow you have because we are hardly sucking any air in to begin with and if we can slow down the flow than we can slow down the need for the Ecu to make its mixture more thursty. I'm not sure I'd really like the truth here. I know for a fact that bigger intakes and having a clean filter for that matter, increase power and throttle response but i have no idea on the truth of them increasing milage.
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Glad you were able to find something to work for you and test on the cheap!
Regarding Helmholtz Intake Chamber sytems, are usually required, to smooth out a given engines power-band when the standard (airbox>inlet pipe>MAF) does not satisfy the engine for the engine's required level of performance is to be by the engineers.. Not "pressurizing" the air so to speak, but to keep a consistant Volume of air availiable for the engine at most RPM rates.
When you change from stock to an aftermarket CAI for use as a WAI, you elliminate some pumping losses which gives you greater intake volume efficiency. Every stroke of a piston, sucks in an X amount of air based on the displacement of that cylinder. The only difference is that the length x diameter, giving you a specific tuning characteristics (I.E: Higher Torque at low RPM, and higher Peak HP at higher RPM) You elliminate the "sucking through a straw" characteristic(which would give you a "flat" responce compared. This also goes for exhaust systems as if you were "Blowing through a straw".
Now the Holmholtz exhaust is a different case, this is to produce a certain amount of back pressure, and to tune the exhuast(resonance chamber). Basing its "tuning" on length x diameter=volume variable for your frequency output.