I was just letting you guys know what the rep from FM said. I'm still deciding on my muffler. I just thought it was strange that a 50 series would give you more TQ. Like I said, I like the sound of the flows too. Maybe it was just my truck. If the guys that have the FM, and enjoy them, then rock on man!

 

I have the 50 series and have received several compliments on the sound. I like the idle sound but have never heard the wot sound.

 

i swaped out my flowmaster for a magnaflow, best decision ever made, other than the anoying resonace at high speeds, i got more power, torque and the sound to better and at lower rpms is not that much different

 

I have a 40 flow on the truck and like evrything but the drone, but thats not going to make me change it till it rusts off. I have heard a few mag's and didn't really like the sound as much as flowM. I think when it is time to change i am going to try the areo chambers.. Also 5 hp at the wheels isn't nothing thast going to win or loose a race, unless you all out drag racing.. Thats my story and I am sticking to it.
JOHN

 

As everyone else said, go with what you think sounds best. I personally wouldn't run a Flowmaster on a Pinto if it was gave to me, but that's just me.

 

i know this guy who worked for nasa that designed a muffler that once used a bearing that was installed wrong in a muffler that was a defect that he used on a space shuttle

 

That is a sentence that is very confusing that I don't understand.

 

 

im running a 50 series on my 6.0l and love it..

 

I agree with you 95%. I think the magnaflow has less resonance. I also picked up .2 in the 1/4 with this one change.