i felt a good power gain on the low end (but thats cause i lost my cat) and ell my car backfires alot because i have no smog device but you wont probably have as dramatic an affect. i would say exhaust would sound a run a little smoother, plus they look cool. headers are used i would say to complete the exhaust if you had a whole system. but dont quote me. get one, there fun and easy to install.