performance mods and chip questions

My friend has a 02 jetta with the v-6 and an automatic.He wanted to know what kind of performance mods he can do to his jetta.He don't have money for a supercharger so that is out of the question.He was thinking of a chip.How much hp will he gain from one?Is it worth it?what is some other performance mods he can get for his jetta?

I would add a chip and exhaust, both will provide a dramatic improvement immediatly. Having a automatic limits your options for more power, but my suggestions will improve your preformance without spending alot of cash.

do the full exhaust, start with headers and then go into a high flow cat and a exhaust system, put in a intake system and get a chip. the car will increse power by close to 30%