Currently I'm using a generic brand filter ( teh sucky ) . Mid-high/vtec RPM alot more pull than my stock intake with K&N filter (drop-in). I'll be using an HKS mushroom filter as soon as I find one. Fitment is average. ABS is a little in the way and the battery.
I would say your fitment is better than mine. Building them that tight to the battery box is probably to reduce the amount of bends in the airflow. You need to try this: hold the rpm's in first gear up around VTEC, let the engine run at that speed for a second or two so you get some airflow going through the engine and then slam on the gas! I noticed quit an extra kick from the intake. I added an extension to it to put the filter down inside the fender, it made the intake a lot quieter but reduced the mid/high VTEC pull slightly.
Can someone explain how that works and why the chamber is bigger at the throttle than towards the filter?? I always thought that the piping would be bigger, then reduce to the size of the throttle...kinda like the AEM V2 intakes...it seems to me that having a big chamber up top isn't going to do u any good if the piping itself isn't allowing anymore air into it...kinda like the bottleneck effect...
When air flows quickly (high velocity) it has low pressure, once it slows down the pressure increases. By putting that chamber in front of the throttle body, the air is slowing down which makes it much easier to turn without turbulence. Turbulence coming into the throttle body isn't a good thing, it causes an uneven fuel/air mixture. Also, since the air is now higher pressure it atomizes the fuel more quickly.
That pretty much summarizes why TopSpeed, J's Racing, and the BB6 Type-S come with fat intakes. All I can really say for sure is that it feels like it works!
Makes sense...so wuts the theory behind the AEM V2 then?? Wouldnt it be contrary to wut u just said?? I assumed you would want to stuff as much as air as possible into the manifold, hence the term forced induction...like for the AEM V2, you have larger piping, which bottle necks, causing an increase in the velocity of the air going into the throttle body....
AEM had a different idea with the V2, they were concerned with creating different resonating frequencies by using two different diameter pipes. I remember a quote from their website once about the V2 creating a "mild supercharge effect" or something like that.
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