If your ped bogs at initial take off without an air cleaner, imagine how much restriction you must have at high rpm.
Make sure that the air cleaner housing/mounting does not cover any holes on the carb, many lawn mowers have this feature, presumably to discourage running without the air cleaner.
Keep in mind that your ped carb, unlike your vette, has no mechanism for squirting about a quart of gas into the intake when you nail it. Most slide type carburetors will give you best accelleration if you roll on the throttle as the revs increase. Think about air flowing past the needle jet and it will all become clear.
The CV carb was designed to resolve this problem by controlling the throttle slide with manifold vacuum, while allowing the rider to pin the throttle so he could feel macho. :-)