Picture of a cold air intake
http://www.rksport.com/rkstore/asset...CAV-E33211.jpg
Personally, I prefer AEM cold air intakes. But people are talking about
HOTSPOT or something CAI as it seems, I've never heard of them since G20 is
new to me, I have to read more on aftermarket support, but
since I am swapping the engine, ecu, tranny, etc... I have to check
aftermarket for the Silvia.
But, AEM is a company I've always trusted, and most Honda/Acura
enthusiants with serious mods go with AEM. And they have proven
their performance well.
Also, ICEMAN, I like. DC Sports, one of my my fav company
For limited bay space, HKS Super PowerFlow is preferable for it's special compact
cone filter. But, I am getting too precise
CAI was a big improvement over the restrictive stock air intake box. You can
definitely feel the car pull harder above 4000 rpms and it gives a
nice performance tone when the throttle is applied.
CAI is a vacumm, sucks in cold air, and colder air = engine is breathing better, that is why people race especially at night, after midnight, besides the fact that there is less public traffic and cops, also track, is due to colder, milder air.
Also, the colder the air, the better for the engine. Example, a turbo runs better in less humid weather, ie night time.
So it's a vacumm.
...___ Cold air intake
...|
Engine
...|_Header____ get a hi-flow cataletic converter____ cat back exhaust ---- pipe
Picture of a header :
http://www.rksport.com/rkstore/asset...V-ERKS024C.jpg
Picture of a hi-flow converter :
http://www.rksport.com/rkstore/asset.../020994005.jpg
This is the side of the car, left side is the front of the car.
As you can see, the header connects the engine with the piping
under the car, towards the converter, which filters emissions, a nice
hi flow cat is always good, then the exhaust is released out the back
of the car (pipe)
Seriously, think of the concept of .. you have 3 rooms let's say.
each room has a kinda small door to connet to each other, you want to most
compression possible, so you cram 10 fat people into room 1, then
they all try to squuuuueze through the door, while more fat people come
in, and then compression shoots them flying forward over and over
again through all the rooms, all the doors
Hope this was insightful, if I had photoshop at work, I'd draw you a car diagram
whith kick'in info.
Peace
Props.