Is there a hp increase in getting the whole magnaflow catback? I love the sound of them but i want to keep my stock z28 exhaust tips. So i guess my question is where can i get just the muffler and is there a difference in sound and hp? Thanks in advance

 

Call up magnaflow i guess... The HP gains i think were good with my car. I just had a K&N before and definatly noticed a good SOTP gain when the magnaflow went on. I love the mangaflow tips though over the stock ones...and If you were to just get the muffler, you would still need pipes going to the stock tips, which i'm not even sure will line up right

 

it says 14 hp gain check the site magnaflow.com find the cat back and click dyno