Flowmaster suv 50 series TOO LOUD!!! Can i add glasspacks?

[levi_09]

Ok so I have a 2001 chevy silverado 2500 with the 6.0 L. My catalyctic converters were starting to get clogged, so over the weekend I bolted on Pacesetter long tube headers to a Pacesetter Ypipe. From there its 3" straight pipe into a single in/out 3" Flowmaster 50 series suv muffler. After the muffler i kept the stock exhaust pipe over the axle and exiting behind the rear tire. I thought that since this muffler was one of FM's quietest it wouldnt be too loud but boy was i wrong. I will say that it sounds awesome! But its too loud for an everyday driver and for my taste. I am wanting to quiet it down a bit. So my question is what is the best way to go about doing this? I was told that this muffler is quieter than all of the other big name mufflers, although i think the headers combined with the y pipe and no cats are the source of most of the noise. I am thinkin of welding a glass pack or bullet style muffler inline after the y pipe to quiet it down a bit....anyone else ever done this? Any help is appreciated, thanks

[CustomChevyGuy]

I have the Flowmaster 50 on my truck, dumped under my bed, and I love the rumble it gives. I knew it was loud, and was even told that it was loud by the guy I got it from. (His homeowners association was the reason he took it off of his suv.) I'm not sure how adding the glass packs to the current setup would sound, but I'd be willing to bet that it would add a more raspy-ness to the current sound after it was broken in.

If you are looking for another muffler option, I'd say look at Magnaflow. They seem to be on the quieter side of things, till you jump on the gas..

[levi_09]

Thanks for the idea but I have a feeling I will run into the same problem with any other muffler

[SUBURBIAN]

There are a number of reasons why it's louder than you prefer...the headers, the y-pipe, deletion of cats, and use of 3" pipe. A glasspack will dampen out some of the sound.

[levi_09]

How bad(if any) will adding the glass pack hurt performance?

[SUBURBIAN]

It really shouldn't be noticeable.

[1988 GMC 355]

You could use a Dynomax Bullet for a resonator, alot less raspy then a glasspack

[SUBURBIAN]

All of the raspiness will be cancelled out by that chambered FM 50.