Improving low valve lift flow

Throttle body cleaner?
How many engines have an oil breather to the intake. All. Yeah we're Factory designing reversion into our engines, that's what we're doing, no.
That's funny my oil breather is connected to the underside of the throttle plate. So where's all that carbon deposited on the underside of the air cleaner coming from.........You know DIRECTLY ABOVE THE CARB?