Quote:
Originally Posted by Eddie25
It just doesn't make sense. I am aware of the resonator but getting info on exactly what it does is hard. however common sense will tell you shorter pipe means less restriction = les suction motor has to do to get air in. my plan was to delete my air box completely. then modify it like in the first image. but that result showed cars performing better with the standard air box? so what if I do the mod showed in pic 2. still using the airbox just putting the filter at the end? but just improve cold air circulation.
Attachment 17095
Attachment 17094 |
A resonator resonates. An intake resonator tunes the length of the intake pipe, making the column of air in the intake tract "longer" without it actually having to be longer. This means you can tune out annoyjng drones at certain rpm by changing the natural pitch of the intake noise.
It can also help "pulse tune" the intake, where the intake air moves faster at certain rpm/loads, but change anything else in the intake and you can throw that tuning off.
-
A short intake tract technically should liberate more high rpm power. Technically... and only if the intake itself is the big restriction... but a long intake tube typically works better at medium to low rpms. In my case, it works better at high rpm, too. It's on a case-to-case basis, though.
What applies to a tiny Daihatsu engine fitted with an overly large aftermarket filter that most likely causes flow stagnation (something they didn't mention in the MCM video because... duh... doesn't fit the script) can't be generalized to your (Focus?).
-
Still, even the best intake won't keep you from having to downshift. Only an ECU tune or a good exhaust manifold will have enough of an effect for that.