A few years ago, I bought and installed a Gibson single in, dual out catback exhaust. The kit I bought had both pipes exit on the passenger side. One of the pipes was too close to my spare tire so I went to a shop and had them split that pipe and reroute it out the other side. So, now they exit behind each rear tire. I've given the truck to my son and he doesn't think it's loud enough for him. He has his mind made up that he wants a flowmaster muffler. I don't want this to turn into a pro/con flowmaster discussion as many of these posts do. He's spending his own money on it and if he wants to buy a flowmaster, I'll let him. He wants sound - not that concerned with performance. So, my question is - does anyone have a model and a part number that would be a good choice to replace a SIDO muffler that was designed to fit the stock mounts? I've heard him talk about 40 series and 10 maybe. I am not trying to talk him into or out of anything related to this - just want to make sure he gets what should fit. And hopefully he can keep as much of the pipes as possible that are already there. The original Gibson passenger side exit is still clamped on, but the other exit pipe was welded on when it was rerouted.

 

the 10 is pretty darn loud. The one i would look at is either a super 44 or super 40 the super 40 will be the louder one if i remember correctly.

 

Damn kids and their loud trucks.


The FM will rob horsepower and will rust out within a couple years.

Get anything besides a FM.

 

As for noise and tone, I was very content with the 50 series I had on mine. It was actually too loud for the Germans, so I had to take it off and tone it down with a 70 series. The 50 is loud and throaty. Like all FM's, it has a drone at higher rpm's.

 

IMO i like cherry bombs and magnaflows. The only hemi i ever had had dual cherry bomb vortecs on it with no cats and X-pipe then shortly took the mufflers off.

 

The FM10 is NOT chambered like the 40/44/50 are. It is an EXACT clone of the Cherry Bomb Extreme. It utilizes a single wing plate.

So if you can talk him into the 10, he'll get stupid loud when he's on the gas, not too bad at idle and won't get the dreaded drone or lose performance like the chambered models...

 

i think the 10 and 40 will both sound pretty good if he's set on flowmaster. Slight edge to the 10, pretty sure they both will fit with minimal re-manufacturing of your existing setup.

 

The Flowmaster 50HD I had droned pretty bad plus in three years the entire top became swiss cheese, more holes than metal when I removed it and put the Cherry Bomb on...

 

Get a cutout and get some real loudness for him.