preventative maintenance goes a long ways,
check your injector screens, clean them out
check fuel filter actually take it off and tip to see if the fuel is colored or just change it.
Check plugs, cap and rotor, wires etc... and vacuum lines change them all...
check the F.I.T valve and adjust
check ignition timing and adjust
check distributor connections, take apart and clean
clean inside of distributor, blow it out with compressed air
check all wiring take the time to inspect and clean your car and it will give you the performance you are looking for....