engine problems

I just bought a 99 grand am Gt and if I try to accellerate fast it seems To stay between 2000 and 3000 rpm and lacks power

Welcome to the forum. Are there any other symptoms? (sounds, smells, ect.)?

It could be a blocked catalytic converter, exhaust manifold leak, clogged fuel line, many many different things. Are there any symptoms and/or engine codes? (is your check engine light on)

there is no smell and no leaks on ground also the exaust seems to flow properly though both exaust pipes.

I'd start with a tune up, plugs, wires, fuel filter, bottle of injector cleaner in the tank.:2cents:

one thing would be to change the air filter. Most dont change it often enough.
If you hav the stock air box, change it when you change the oil for best results :)
Its cheap for those filters, and you'll save $$$ on gas too.