Not at all. The secret to going fast is not in the buying of hopups, it's smooth driving. Sure, some "optional" parts are not so "optional", but half the supposed go-fast bits are money makers, pure and simple.
there is always someone that has to shoot it down!!!
Exhibit A : Anything anodised. Adds cost, looks fine, but does it make you faster? No.
the correct answer is...
ultimatly does it make you slower? NO!
and does it look fast? YES!