BDI: could it be oil in the cylinder from adjusting the valves?? thats kinda what it sounds like to me... if it was running rich on fuel, i dont think it would smoke, just smell like gas. but i'm not an engine expert.. so thats my $.02

CRX-stg3: better cams normally do help with hp, adjust how long the valve stays open and how high up the valve travels, which allows for more fuel, and can result in more power.

someone else please back me up or clarify for me, if i have something backwards or mixed up.