No tune,also the might not make it beefier but higher pitch,I added one on my dohc neon, from stock to none was super ricer lol,but added the mangnaflow was almost as high but no back end pops and gargle after 5k rpms, spend some time looking around at them on youtube, also look at some axle back exhaust, its in the area that ur looking for,u wont need a tune