Whatever.
Everytime I try to explain something , someone doesn't get it. Not saying I'm right , but just not understood.
I would dump the flowmaster and get a dynomax. They are alot cheap and sound better , flow better and rust alot slow than a flowmaster. . Also , you still have that nice tone and can have a decent conversation with your girl , won't wake up your neighbors , won't call the noise patrol.

Who knows if you are right or not... however, you do come across in a biased manner (which isn't very persuasive) and it'* also seems very opinionated. Not to say that you are wrong or anything..but who else on here actually has a dynomax? lol. I'll keep my flowmaster...

The flowmaster isn't being underused or anything. It'* built for this engine size... the 3800 RWD in F bodies. It fits ours perfectly. It wouldn't fit that size pipe, if it wasn't made for the flow from a pipe that size. Please keep the negative comments aside unless you have used the product, It'* plain to see how well baffled they are as well, by watching the exhaust vids from the MN Meet.

Cherry bomb it, and make sure it'* got rubber grommets between the hangers and muffler.

EDIT: infact the flowmasters flow more evenly compared to the dynomax, we had them side by side, on identical engines/exhaust, and the flowmaster was even....

I'm guessing the vehicle in question already has a resonator, which is, IF I'm correct, a hollow chamber used to make sound waves cancel each other out to improve/tune the sound...
The 'CHERRY BOMB' is also a chamber, except it is filled with a perforated core and fiberglass matting to absorb the sound, effectively muting the obnoxious tones of the exhaust pulses coming out of the rear-mounted muffler (...pick a brand; it'll act the same way because of the location of the muffler...).

I chose the Cherry Bomb brand to coincide with the perforated cores of my MagnaFlow and ANSA stainless muffler and tips, thereby maintaining the 'perforation' theory of absorbing sound, rather than putting something in the system after the stock catalytic converter that would have any protrusions into the exhaust flow.

The desired effect of quieting the exhaust was immediate and satisfying.

The TRICK is to climb under the car and measure the area where the straight muffler can be installed.
I picked up the muffler at a local Speed Shop. It had the flange welded on the end to make the 2.5" Outside Diameter of the exhaust system, but it was WAY TOO LONG at 29" overall.
The Cherry Bomb muffler I chose had the same Inside Diameter of 2.25" as the one I initially purchased, but it was only about 23" long overall, and the installer had to build it up to 2.5" to mate it with the existing exhaust pipe.
IT WORKED, though.

If you can't find a Cherry Bomb brand glasspack in the correct length, there are other brands of glasspacks with LOUVERED cores that will work; you just have to decide which way you want those LOUVERS to go into your system.

I did beat this Topic to death a few months ago, because I was finding out that changing to a higher flow system netted just about everyone with a lot of NOISE, no matter how careful you were in your selection of aftermarket parts.
THE SOLUTION?: Old School glasspack!!!

for what i hear dynomax'* rust out first. all i know is that my flowmaster is pretty heavy duty. sound is a personal preference, if you're basing an opinion just on sound.

Have no negative comments , just different opinions.
I have used the 40-series and also used superturbo'*. The 40-series has rust spots on it ahter 1 year , the dynomax just got dirty aftry 2 years .
I think dynomax is better .
BTW , I have not been stopp by the noise police once with the dynomax and have paid 7 tickets with the flowmasters.
Also on the montecaross board , They have test results and the aerochambers won the flow contest , but dynomax beat flowmaster.

i've never been pulled over for my exhaust, and don't really plan on it
if you want to compare some sound clips on "similiar cars", check out
http://www.mnbonnevilleclub.com/11012003v.php

my car has a flowmaster and allmachtige has a dynomax.

heres a little more info.

you can't compare a 40 series to a 80 series

Wow, this a good topic! Now everyone be nice!

I have the magnaflow designed for the camaro/firebird on mine. It sounds awesome at idle(IMO) and then a little loud(but not really too loud) until about 2500 rpm and then great the rest of the way. Also when I rev I get no cackle(sp?) or back fire. Everything else is stock other than my muffler and tips. Overall, I'm a happy Magnaflow owner.

I stand by the M