Cheap performance upgrades

Im am looking into some performance upgrades for my 3.4 grand am gt ho. Possibly a chip, where could i find a performance chip or other performance parts. And what would you recomend getting that would add the most performance.

bump...

there isn't a lot (hardly any) aftermarket for the 3.4 engine. There are always the normal upgrades: plus/wires, ignition, cold air intake, exhaust. but I don't know beyond that...

have your intake manifolds gasket matched, have your heads ported for FI, S&S headers/full exhaust, plugs/wires, oh and the GM supercharger. Congratulations you are now running low 14s, and with some suspension/tire work and tuning you'll break 13s.