i had a true dual system installed a few weeks ago on my f150 w/4.6. New shorty headers, high flow cats, x pipe to flowmaster 40 delta flows. Was told they didn't make or couldnt' get the original 40's. Now it sounds nice, is a lil loud, but not loud enough. I had original 40's on my old truck with true duals and still have the mufflers laying in my garage. I've thought about putting them on, but then thought maybe try dual imco xtreme's or mac flowpaths. Not really sure about no mufflers, if i heard a sound clip maybe that would change my mind.

And magnaflow are not an option, not found of the sound.

 

Unfortunately for you all that work you put in the exhaust has gone to waste. I don't know how many people actually research parts they buy, but flowmaster is the worst performing muffler on the market. MAC is identical to that. Look at dynomax, borla, or any other packed mffler. Chambered designes rob you of so much potential power.

 

it has not gone to waste as i have picked up power. Maybe not as much as a magnaflow muffler, but i do not like the sound they give.

 

I do not have direct linking permission so go here ( and f it requests you to sign up, its a good exhaust clip site ) and listen toaything you want. heres a few trucks going mufflerless on there.

http://exhaustsoundclips.com/phpbb2/...egory&cat_id=3

 

i can't download here at work.

there used to be a mustangsoundclips.com or something liek that. It pretty much had any conceivable system on there to listen to.