The IS200 is a slow car, if you want more power go for the IS300, the car it self is quite heavy and the engine was built for economy as apposed to power. There are a few mods like air filters and extrators and exhaust but they are all quite small gains for the 1g-fe engine. best bet is to turbo/supercharge or change engine. But to me the IS200 is a cruiser not a racer, enjoy the luxuries of the car and cruise by. To give you an estimate of how fast they are they are rougly the same as a corolla.