there are only two real options worth considering... the DHP powertuner or the HPtuner. many people with our cars use the DHP so you have more people to help you with issues and pointers. the HPtuner can also be updated to work on other cars. so thats one benifit of it.

you may find hand held tuners like the Hypertech or the diablo or something... but these are very very limited and still cost the same price as the dhp or hptuner. so deff not worth it.