LM would be the best flowing CAT BACK system out there (ie. best performance gain). I believe the LM flows 1200cfm while most others flow between 320-650cfm.

Some don't like the raspyness but you can always replace the "resonator" with a dynomax bullet (I did) and retain most of the flow ability.

IF you're planning on more extensive mods like headers, ORP, cam, etc... it might become obnoxiously loud though.

 

i think the loudmouth sounds awesome as long as you keep everything stock.

 

Flowmaster may not flow as well, but you can not beat that incredible sound. And it is not costly either.

 

magnaflow does sound awesome.

just be warned, if you plan to remove your cats, it raises the noise and rasp level quite a bit.

i have a bassani orp, with my magnaflow and around town and at idle it is fantastic and no drone on the highway. BUT full throttle is pretty insane and raspy...not that i really car, cause if i'm full throttle i'm racing and who cares what it sounds like as long as it performs

 

Yup, he asked us our opinion and I told him mine, b|tch

 

My recommendation: DO A SEARCH
Other than that hear what you can and base it off that, everyone has their likes/dislikes (my like is GMMG), so its basically useless to see what everyone else thinks when you are the one buying it, flow differences are negligible........
Brian

 

I dig my LM, as far as a total package, it/s:

A. Relatively inexpensive (thunder 349.99)
B. Makes your car sound like you've got a @#$%-load of mods done
C. Noticeable power gain (better if your mods work well together-I have been very happy with my combo.)
D. Dual-Dual tips look nicer than everything but B+B/Corsa premium series tips

 

Being "****", and wanting "SLP stuff" on the SS, I went w/ SLP's Loudmouth, LT headers, and Y-pipe.

Deciding factors;
1. Cost
2. In my brother's opinion, he liked it better than the Borla he had had before switching to the Loudmouth.
3. I'm "**** " and wanted all "SLP stuff" on the SS.

I think it's a matter of personal opinion which system is best. Try to hear the different systems out there and compare costs.

 

Nice language there.

 

I love my Magnaflow. Money was not a consideration when I made my choice. I went with the Magna cause it sounds a bit louder than stock at idle but when you open her up it is sweet. In other words, you can kinda control the sound you want depending on the gear/rpms. You want to pull out of the garage quietly(or pull in when you have been out a bit late-my case) you can. You want to turn heads, just get it on. That true V-8 sound will be there. No highway drone either. That is what I love about it. Tips are great,install is cream cheese and sound is wonderful. Loudmouth is just what it says,great system,but a little sophmoric for me. GMMG is awesome, but if you are wanting a well tuned non-restrictive exhaust flow, hard to beat. For the $$$ you can't. Hope this helps.

2000 M6 Ragtop.