Just thinking aloud here. I'm curious.
I still have the original airbox on my car. Somewhere I even have the snorkel and the cold air box which goes behind the headlight.
I've taken this off as it appears to be restrictive once you've ported the charger and taken the restriction out of the airbox outlet. Which is a shame as it's a really neat solution.
With no charcoal canister, I've run a cold air feed into the airbox from the inside of the wing, drawing air from behind the fog light. It's been like that for years. But it's occurred to me that it's probably not doing much once it dips inside the wing. Because there's no forward-facing duct, it's just sucking static air out of the wing (with a little airflow around the fog light).
So with this in mind, do I really need the pipe to go any further into the wing than just inside the hole for the charcoal canister? That would still be doing the same thing, sucking air out of the space under the headight, but if the pipe is pointing down then there's literally no airflow into it from the front of the car. Does this actually matter, as long as it's getting cold air?
Or realistically am I better either:
- putting the original snorkel and cold air box back on, as the restriction is offset by the good flow of cold air
- just leaving the airbox without a cold air feed, as it's pretty well placed anyway