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  #1  
Old 09-16-2013, 11:27 PM
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Dual Exhaust

I've got a 2010 F-150 XLT with the 4.6 V8. Just curious what my options might be with going to a dual exhaust system? Is it as simple as adding flowmasters/magnaflow mufflers after the catalytic converter? Is it even worth it?
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Old 09-17-2013, 09:08 PM
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Not worth it at all if you think you are going to gain performance. If you just want a nice rumble, just add in the Flowmaster, Borla, Magnaflow etc in place of your stock muffler. Keep it a single exhaust. It will sound great. I did it to my 5.4 in My Expy. Great sound and it was relatively cheap.
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Old 09-17-2013, 09:48 PM
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IMHO, the 4.6's sound better than the 5.4's with a nice exhaust.

as said above, do it for sound, and nothing else

go for a stainless if you want it to last. if you do a full custom exhaust, plan on doing it every few years unless you can get them to use stainless, which they won't. or get a full stainless kit.
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Old 09-17-2013, 10:10 PM
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I had a magnaflow dual cat back on mine. Not too overly loud, but had a sweet rumble.
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Old 09-17-2013, 11:00 PM
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Thanks guys, I appreciate the info.
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Old 09-18-2013, 10:02 AM
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Quote:
Originally Posted by meborder View Post
IMHO, the 4.6's sound better than the 5.4's with a nice exhaust.

as said above, do it for sound, and nothing else

go for a stainless if you want it to last. if you do a full custom exhaust, plan on doing it every few years unless you can get them to use stainless, which they won't. or get a full stainless kit.
IMO the 4.6's sound better than the 5.4's & 5.0, 6.2 STOCK! My neighbor drives a bone stock 2009 4.6 XL Scab for work. His truck sounds more throaty than my 5.0 and I have modified my exhaust.

I actually asked him one day what muffler he put on his work truck, he said it's 100% stock, but hes had people ask him this before lol.
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Old 09-24-2013, 11:09 AM
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Thanks, it doesn't sound bad now but I want a little more.
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Old 09-24-2013, 08:00 PM
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i have a 2010 STX 4.6 2V with a flowmaster single in/ duel out 50 series muffler. If i had to do it again i'd have just removed the stock muffler and put in a single in/ single out, as my left tailpipe keeps sagging due to contacting the leaf spring when my tires get rotated.

I love the sound of the 50 series but it's a little loud to me at times, but the wife loves it, so i suppose it's going to stay. next time i'll go with a 60 or 70 series... perhaps it's because i'm getting older that i don't like it quite so loud. I've had it for 3 years and no issue with it rusting out like many will say. there is a little rust on the welded seams of the pipes but i expect that.

hope this helps,

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Old 09-24-2013, 09:29 PM
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Thanks, I've been thinking about a single in, single out.
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Old 09-24-2013, 10:58 PM
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I made this video to show a friend my new setup when I bought my truck. Full stainless Flowmaster dual for $300 out the door from Meinike Car Center. And yes it did provide some performance and MPG from what I noticed stock. Not crazy amounts but enough to notice.

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  #11  
Old 09-25-2013, 12:50 AM
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Go Magnaflow or Dynomax Ultraflows... Sound better, flow better, and last longer than Slowmasters. Still, you won't gain anything over stock with simply a cat back system, other than sound. I like the '09-'10 stock muffler sound. Just enough throat, and quiet when cruising. If I want loud, I drive the Stang or my bike.
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Old 10-08-2013, 07:43 PM
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Can anyone tell me why so many people are settling for just a cat back system and not going true dual (w/ X pipe) from the manifold? In theory, wouldn't the truck breath better?
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Old 10-08-2013, 07:49 PM
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I would defiantly do it and defiantly use 40 series flow masters
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Old 10-08-2013, 11:20 PM
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Better yet!

Quote:
Originally Posted by Ullnevrno View Post
Can anyone tell me why so many people are settling for just a cat back system and not going true dual (w/ X pipe) from the manifold? In theory, wouldn't the truck breath better?
Let me rephrase, this is what I plan to do to my 2013 XLT (5.0). However, I can not find anyone that has done this. Why not, does it cause back pressure issues?
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Old 10-09-2013, 01:55 AM
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Really???

Quote:
Originally Posted by Beechkid View Post
Unfortunitely I doubt if they will make a complete system because to even touch the oem cats for 8yrs/80K miles is a felony (fed law)
I found this posted in a different thread (I think it was called "Long Tube Headers").

This doesn't sound right. Can anybody confirm this?

Last edited by Ullnevrno; 10-09-2013 at 02:01 AM. Reason: Inform where info was found.
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Old 10-09-2013, 01:55 AM
 
 
 
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