the ability to drive there tune your car,pull the run off not detonate or blow up your engine,and drive home.. thats what a tuner is about. its not just adding racing gas and adjusting your timing.. its trial and error.. you make a a/f setting and stick with it.. and yes 1,000hp on the streets is useless unless in an awd(thats why they invented dynos) and they have dyno competitons..