wanna buy super 44 flowmaster...question
Just say 'No' to Fartmaster ...

And - read this: https://www.f150online.com/forums/1754796-post2.html

And - read this: https://www.f150online.com/forums/1754796-post2.html
In my opinion the flowmaster mufflers make the best sound. If your really concerned about hp and torque loss or gain leave your factory muffler on. The design of the magnaflow is the same as the factory muffler and it will only be slightly louder with a muffler replacement alone. Changing pipe size and going to dual outlets will add to the sound though.
In my opinion the flowmaster mufflers make the best sound. If your really concerned about hp and torque loss or gain leave your factory muffler on. The design of the magnaflow is the same as the factory muffler and it will only be slightly louder with a muffler replacement alone. Changing pipe size and going to dual outlets will add to the sound though.
the factory muffler is a baffled muffler like the flowmaster
The factory mufflers are a straight through design. 
Also, the link to which MGDfan posted was written by one of the most trusted, knowledgeable and successful F150 programmers/tuners in the country.

Also, the link to which MGDfan posted was written by one of the most trusted, knowledgeable and successful F150 programmers/tuners in the country.
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I'm man enough to admit i'm wrong

No. I thought the OP had an 09+ YM, but a good buddy pointed out that his is an '08...which DID have a 'baffle' type factory muffler. Not hardly like the Fartmaster design but baffled nonetheless.
So, were we both RIGHT?

Boy am I corn-fused! Methinks we just crossed over into....The Twilight Zone!




