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Discussion Starter · #1 ·
I'm wanting to do something to my exhaust to get a little better flow. I don't wanna change with aftermarket because I don't want a nasty sound. Just wonder what would y'all think of either cutting stock muffler or resonator off? Anyone done this to stock exhaust? And which should I cut off?
 

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If sound is an issue. Keep the stock exhaust and get an aftermarket y pipe. You will yield more HP/TQ with it and it will be slightly louder than stock.


2013 Lariat CrewCab 4x4 Off-Road ShortBox w/3.73
 

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I'm wanting to do something to my exhaust to get a little better flow. I don't wanna change with aftermarket because I don't want a nasty sound. Just wonder what would y'all think of either cutting stock muffler or resonator off? Anyone done this to stock exhaust? And which should I cut off?
image-905296793.jpg

I left the factory resonator and the flex pipe on and just swapped the muffler for borla and it sounds sweet. Not to loud but def has little more of growl. U can see the video I posted last weekend of the sound. Good luck !
 

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Messing with the exhaust will result in more sound.
Removing the resonator will result in more cabin drone, as the resonator is "like" a first step muffler.
removing the muffler will introduce a ton of sound as now you're just running 2 cats and a resonator to reduce all the exhaust sounds.
Putting an O/R y pipe will increase sound but increase airflow the most, when coupled with a catback (which will increase sound in different levels, depending which exhaust you go with).
o/R y pipe with resonator delete and stock muffler.....
Straight pipe (no cats, no resonator, no muffler)
O/R y pipe with catback exhaust
Corsa catback with resonator delete
Hearthrob catback (most popular)
 

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<img src="http://www.f150ecoboost.net/forum/attachment.php?attachmentid=2963"/> I left the factory resonator and the flex pipe on and just swapped the muffler for borla and it sounds sweet. Not to loud but def has little more of growl. U can see the video I posted last weekend of the sound. Good luck !
Here's mine just swapped the muffler to borla and had custom pipes and tips done. Left the flex and resonator on. The video is crappy but the sound is sweet !!

 

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Discussion Starter · #6 ·
I want to leave tail pipe coming from right side like factory. I for sure want cabin quit so thing of changing muffler and rolling along. But will I get the same sound by ditching muffler or res?
 

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I want to leave tail pipe coming from right side like factory. I for sure want cabin quit so thing of changing muffler and rolling along. But will I get the same sound by ditching muffler or res?
I would just leave everything stock besides the muffler. Keep resonator otherwise it'll be louder...I'd keep the flex pipe also. U can get single in single out muffler should be all set.
 

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Driver side exit is standard. Listen to the video I posted regarding cutting the muffler or resonator titled "straight pipe." That is a massive increase in sound.
 

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You can do a new exhaust and get a twister resonater to keep the sound down with out losing the performance gains of the new exhaust.
 

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Yeah it's pretty beneficial... The ecoboost exhausts are completely identical to the 5.0 exhausts. A turbo exhaust should be designed differently but they didn't. More airflow is a must with turbos..
 

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I'm like everyone else, want that V8 roar out of the Ecobeast but, also now really love "most of" the cab silence. My truck is slowly being blacked out too so, I also want a big-ass black tip. Anyone with experience with the eFe Power Mach Force XP Cat-Back Exhaust System? I found this one and, it has the sweet tip as well as price... just not sure how this one will sound. The manufacture specs look great but, I'd hate to waste the money and end up with a whiner. 2011-13 F150 EcoBoost 3.5L AFE Mach Force XP 4 Inch Cat Back Exhaust System - Stainless Steel 49-43041-B One more question, does changing the exhaust void the warranty. My dealer told me yes last month but, I've heard this is not technically true.
 

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I'm like everyone else, want that V8 roar out of the Ecobeast but, also now really love "most of" the cab silence. My truck is slowly being blacked out too so, I also want a big-ass black tip. Anyone with experience with the eFe Power Mach Force XP Cat-Back Exhaust System? I found this one and, it has the sweet tip as well as price... just not sure how this one will sound. The manufacture specs look great but, I'd hate to waste the money and end up with a whiner. 2011-13 F150 EcoBoost 3.5L AFE Mach Force XP 4 Inch Cat Back Exhaust System - Stainless Steel 49-43041-B One more question, does changing the exhaust void the warranty. My dealer told me yes last month but, I've heard this is not technically true.
My dealer told me not to weld a exhaust on as that could void the warranty. Basically what it boils down to is the dealer has to prove that your modification caused whatever damage happened. So a catback I'm pretty sure you will be ok but who knows its up to your dealer.
 

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All depends on dealer. Mine said anything catback is fine. All your doing is changing muffler and pipes. I kept my stock muffler and pipes too reinstall when lease is up.
 

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As said, it depends on dealer for warranty work. Some stealerships like to give you the "shaft" when it comes to warranty work, some are willing to cooperate with aftermarket modifications. Ask your dealer if you're really worried. Some stealerships will just require that you let them install the part in order for warranty to be maintained (they overcharge majorly to install anything).

We all want that v8 rumble and great sound... The reality is that we have a v6. We can make our v6 sound like a turbo spooling beast, but we can't make it sound like a v8. We're two cylinders short of ever sounding like a v8. (They're two turbos short of comparing to our v6 :D).

You can find exhaust that you like and think you can make do with it... the fact still remains that it will not sound like a v8. If you do get exhaust and you're worried about the sound, keep it under 2500RPMs and you won't hear the worst part of a v6 exhaust.
 
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