Just got an MR2 Spyder, need suggestions for mods

Hi,

I am now the proud owner of my second MR2 (I had the first generation). I need to know what mods work for this car. I see that an Injen Intake adds about 3whp, but I also wanna know what other mods I should look into, and their costs (Trying to keep myself on a budget).

Any help would be appreciated.