i installed a hooker catback on my car with my new engine and its not as loud as i thought it would be. at idle its pretty quiet. but ive never heard it from the outside. will a flowmaster bolt up to my catback and how much louder will it be. do they have a 3" in/dual 3" out

 

it will probably hook up ok but i think in order to get an 80 series flowmaster with 3" in and 3" out you have to buy the american thunder cat-back. i love the sound of flowmaster and if you have the 3" pipe behind it, it should sound great

 

really, i cant buy that muffler separately
maybe my exhaust shop has one.

 

you might try getting an 80 series with the 3"in and the 21/2" outs and take it to an exhaust shop and have them make the 21/2 outs into 3", im sure they can do it

 

yeah but it wouldn't be a true 3" out. ill just see if i can get the right muffler

 

how long have you had your muffler on there? my hooker got louder after about a month of being on. I find mine plenty loud with slp headers and no cat. if it hasn't been on long give it some time.

 

since january