Juding by others on here I would say a fast road cam is needed along with some decent exhaust headers and a good quality induction kit. Then you get a remap done.
How much money are you willing to spend on this project though? If money is tight then just do the exhaust and induction kit for now.
I know someone was recommending fuel pressure valves but TBH I dont know much about these or even if they work the B20.