I wanted to make my mustang louder so I went on AM and order me so pypes that have no cats it's a x-pipe. I was going to make it straight pipes but that's bad for the car. I have flowmaster 40's. Should I just put those on and keep the rest open? Or just return the x-pipe?

 

I ran a Catless x pipe with no muffler, sounded cool at wot and idle, anything else was stupid, I put 40s series on and it's still really loud but has a way better tone

 

So I should just put the flowmasters on and leave it catless?

 

Ya you'll need a muffler, ill post a video of mine

 

Heres Catless Xpipe and 40 series on my car

 

That sounds really good. Does it sound pretty good at idle?

 

I'll go make another video, but short answer yes,

 

Does sound good

 

Here's idle, NEED TO LISTEN WITH desktop or stereo speakers, iPhone or any other phone doesn't give you the bass or deepness

Also rated best sounding s197 around my area

 

I have an off-road x-pipe on my car with the stock mufflers, and I love the way it sounds, especially when I gear down and let the engine do the braking