i already have flowmasters loudes 40 series muffler, with stock cats and its too quiet i would like it to be louder ,what can i do t in crease the sound with the same mufflers

 

get an off road H or X pipe and replace the mid pipe with the cats with this new pipe and it will be much louder for sure.

 

yup.... and get some better headers if you already havent

 

Yep like Roundman and nemethjames said i was in your shoes i had 40 series mufflers and it was quiet so i took off the stock h-pipe and put on a BBK x-pipe it sounded so much better those 4 cats plug things up when it comes to sound I am alos putting BBK equal lenght ceramic coated headers on this spring but get a off road x-pipe it will wake things up.

 

i have already been looking into gettin a mac off road h pipe but i may need to keep it legal and put on a h pipe with 2 cats high flow will it still be louder if i do this? another ? for yah x pipe or h pipe what is better and sounds nicer

 

why not a h pipe ?witch is better

 

h pipe is a more deep tone where the x pipe is raspier

 

that why im going with a H pipe

 

Yeah off Road X or H pipe will make it sound nice

 

I have an Xpipe with cats and it still makes a major difference man, go for the catted x