Hi, I am new to this forum but have been reading it for a while. A little bit of background info. I have a 2007 Charcoal Grey Ford Expedition Eddie Bauer 4x4 model. I am wanting to add a muffler on it and i have come up with a few options from reading on here and listening to vids on youtube. my main choices are

flowmaster super 44 stainless muffler
flowmaster super 40 aluminized muffler
flowmaster original 40 series stainless muffler

they are all around the same price about $80-100 from jegs, summit, ebay

i mainly want the stainless but the super 40 sounds pretty good too but i would rather have the 10 year flowmaster warranty with stainless then 3 year with the aluminzed. here is one of my main questions:

all these mufflers have the si/do setup with 3" center inlet and 2.5" dual outlets. is this the right size that i need? i called flowmaster they said i need 2.5" center in/2.5" center out for stock replacement size but i want to do si/do with dual pipes straight out the back. There is a video of an 08 expedition on youtube with dual pipes on it and i think another membe ron here did it as well. my buddy recommended an exhaust shop to me that should be able to fab the duals to go around the spare tire and have chrome tips on it. but he was saying the piping would be 2.25" i want the 3" inlet and dual 2.5" outlets with like 3.5" tips or so would be great. so do i have to have a 2.5" inlet muffler or can i put the 3" inlet dual 2.5" outlet on? i think 2.25" is too small for the dual pipes coming out and i wont be able to use the mufflers i want sincfe its a 3" in 2.5" outs.

also if any of you have had this done on your f150s or expys how much did the shop charge you for labor fabrication, materials to do it with a flowmaster muffler? the guy quoted $275 buying a 40 series muffler non stainless from him labor installed chrome tips and 2.25" mandrel bent piping. I would rather have stianless tips but they are pretty expensive.

next question is what do you guys recommend as far as the mufflers i have chosen and other mufflers i might consider? the super 44 is suposed to be the most aggressive muffler from flowmaster and i like the way it sounds from what i have heard on youtube and i want stainless. the super 40 is sweet too but i cant really tell a solid difference between the vids i have heard. i have mainly listened to f150s 5.4l motors si/do super 40 or super 44s but i cant find any with vids on expys. so thats the sound i have to go buy. i think the super 44 would be sweeet and i can get it stianless the super 40 i cant. so lmk what you guys think and if i can do what i would like.

So basically i really would like the super 44 stainless muffler with 3" in/2.5" dual outs fabricated out the back with stainless tips

but if the shop i am bringing it to is cheaper wiht chrome tips i will get the same just with chrome tips. how long do those last and does that sound reasonable worht it? I am wanting to buy the muffler myself and bring it to him therefore hiopefully i will just pay labor and fabbing. i think the guy stocks the 40s and was pushing me on a 40 muffler because i think he charges a little more for them and makes a little money. i was really wanting to spend like $200-250 but $275 isnt bad if his labor is $175 or less and i spend $100 on my muffler that owuld be right there. lmk asap thanks.

 

If your set on Flowmaster the Super 44 does sound good on these modular engines. The Magnaflow 18" and Borla ProXS would sound real good and clear on it, and they're in t-304 stainless or the magnaflows optional t-409 lower grade stainless ( same as Flowmaster ).

 

i havent heard any expeditions or f-150s with the manaflow 18" si/do setup 3" and 2.5" duals. does anyone have any clips on here? ill search youtube. how much do the magnaflows and borla mufflers priced at and how does the sound compare to flowmaster? i really like the super 44 and the way it sounds on the 5.4l motor i have. i think the borlas are much more expensive then the flowmaster or magnaflow also. i was wanting to keep everything around $250 or so

 

flowmaster original 40

 

Sounds like you have already made up your mind! I vote for original 40. That is just my taste. 2 different sounding mufflers, go with the one you like the best...

 

Added to that ^^^
I have heard 44 and 40 on the same rig, and the 44 is NOT as deep, and is not near as "rumbly". Again, just a preference...

 

Well that depends on what truck your talking about, Super 44s definitely have 40s beat on Silverado's.

 

thanks for everyones input. so yoiu think the orginal 40 would sound better? I wanted the super 44 since flowmaster states its the most aggressive and i thought it was the most deepest rumble/tone, but thats more of what im looking for i want aggressive but i want a really nice deep note. i dont really want a lot of raspiness but i know i will get some of that from the flowmaster but i mainly want deep and loud and a nice deep idle. do any of you guys have the super 44 si/do on your f-150s for a vid i can listen to a good one. and do you have one just like it with the original 40? i have heard a super 44 one on youtube but it wasnt that great of a video. any help here would be appreciated. thanks for all your guys input. darrenws6 i loved the way your silverado sounds nice and deep. i checked out some of your vids on youtube. your f150 sounds dang good also but i am not wanting to do the whole true dual setup right now. i mainly just want a 3" si/2.5" do muffler setup with duals out the back fabbed. i believe its the cheapest way to get the look and sound im wanting. maybe later i will get 2 mufflers, delete cats, long tubes, and make true duals.

 

original 40, DONT delete cats, YES long tubes and yes true duals with an x pipe

 

yea that would be the plans for trual duals later long tubes and x pipe. i listened to avfrogs sound clips and his exhaust sounds awesome. i love the deep idle and the way it sounds in and out of the truck but thats true duals. how would mine sound with just original 40 si/do? i cant seem to find many vids with this setup or the super 44s i can get stianless in the 40 and the super 44 so either would be fine but i have heard mixed opinions on either one being louder and deeper than the other. some say the 44 is louder and deepper and some say the 40 is. i don really know what to do since i want to keep this exhaust for a while but true duals might be something down the line

 

Super 44
http://www.youtube.com/watch?v=rP9Vqqh3xLc

http://www.youtube.com/watch?v=uLxM_eAADZg

http://www.youtube.com/watch?v=5JP3DXgVgS4

http://www.youtube.com/watch?v=d_jmoDfANXs


Original 40
http://www.youtube.com/watch?v=WGJgFQdoHeU

http://www.youtube.com/watch?v=AF79j2_gT4A

 

thanks for the vids. they both sound good. but i think i like the super 44 a little better the first vid of the red f150 with the super 44 has the idle that i like. this vid here is of an 07 expedition and its got a flowmaster but i dont know which one and what size but the idle is very sweet too.
http://www.youtube.com/watch?v=rv-a6rJ-B2E

im hoping mine will sound somewhat like that one. thanks again for everyones input. if i did true duals would i need to get long tubes, x or h pipe, 2 mufflers than piping for the back and high flow cats also? how much would something like this run me? im thinking if its not much more than just doing 1 muffler now than i might spend a little more on it to get it done with true duals the first time but i think lts are very expensive and i dont know if they make any for my truck yet.

 

If you ran duals you will want an H or X. With tail pipes I prefer X. High flow cats will sound much better! I think it will be worth the extra cash for duals... You need to just call your shop ask for some quotes.

 

do i still need aftermarket long tubes or would my stock manifolds still work? i like the magnaflow high flow cats so i should get 2 high flow cats, x pipe, and 2 mufflers 3" in and 2.5" or 3" out? and have the shop fab up the rest. how much did your true duals cost you guys?

 

Stock manifolds are fine. No need to "have" to get long tubes. That's what Dereck and I both are running, stock manifolds. High flow cats are awesome, X or H is great. Your shop can make an H really cheap. They can also make an X, but I would suggest ordering one. 2.25" pipes will make a little more low end torque, while 2.5" pipes will make a little more and a little better sound. The mufflers should be ordered the same size as the size of pipe you decide to run.

My suggestion... Order maggi high flow cats (ask Dereck for part numbers), 2.5" stamped X pipe (magnaflow or similar), and a pair of 2.5" In/Out Original 40 Flowmasters, and a pair of 3.5"-4"x18" stainless tips. I promise you won't be disappointed with your new sound