Which Flowmater muffler......?

[va01gtstang]

Which flowmaster muffler has a more hollow sound? The original series or delta flow? Also, I was wonderin why my car (01GT) which has Mac LT's, Prochamber, and cat-back doesn't sound as loud as loud as my friend's car which has the same exhaust set up minus the long tubes. We both have the same mods but his seems to be louder.

 

[Mustang5L5]

The original series has a more hollow sound, but the newer delta flow mufflers don't resonate as much in the interior of the car as the old style...but they are still just as loud.

 

[twogts4us]

And actually LTs will quiet it down a bit...essentially less turbulance.

 

[va01gtstang]

Thats what i intially thought that the LT's flowed better resulting in a quieter note. But if i put flowmasters in place of my MAC flowpaths, will it still be as hollow as a car without LT's with Flowmasters (i.e. just Prochamber and Flowmasters)?