i have a 1996 f150 with a 5.8 351. i took off my stock exhaust and just have the cat. i put on a gibson supertruck exhaust and it wasnt loud at all. im going to take my cat off because i dont have to worry emissons. does anybody know if this will make it louder and sound better? does anybody have this gibson set up on their truck? i need answers!!!

 

I just posted a Q about this same thing.
I have a 97 f150 with a gibson extreme dual.

 

removing cats yeah, will be a bit louder, but dont breath in that fume!

also, idk much about gibson, is your muffler a single in dual out? or single in & single out?

 

its a single inlet dual out let and the pipes come out in front of the rear tire.

 

ok, it should make it a bit louder then,