Hey guys,

So I have a 2002 Mazda Miata, and after a year of getting used to it I want to start adding a little beef to it. I've toyed with the option of exaust upgrades but from what friends are saying and research, its not really the best bang for your buck upgrade. Do you guys have any suggestions? My main competition is my friends Audi A4 so I easily have him in the corners but he burns me in a straight line.. I'm assuming that being his turbo and a little more torque. But any suggestions would be great! Thanks guys! P.s. I am a college student so im looking for affordable ones