you have more money to spend than a broke teenager. when i did mine i just went a cheap route cuz i really wanted to run no muffler.

i say gut the cats, and run straight pipe. see how many people you can wake up at night!

 

1. Do not remove or gut the cats. We all breath the air around us. A high flow cat is no more restrictive than no cat at all. Anyone suggesting to run no cats is a fool.

2. No mufflers on ANY vehicle sounds like straight crap. People who run no cats, no mufflers and the wrong size piping have no idea how the exhuast systems on these trucks are designed to work.

My personal preference is Roush or MBRP. I will never have another Flowmaster, and I will never have another truck with duals. Gains are better across the board with a single 3" than dual 2.5"s. I also feel like dual pipes are something you outgrow. That was the cool thing to do in high school.

Just my opinion. Take it for what it's worth.

 

I have a single Magnaflow, great sound when you get on it, no cabin drone when cruising.

 

X 2

Magnaflow .

 

could you please explain how these exhaust systems are designed to work? i would like to be in the know how

 

Simple concept of backpressure. If you dont believe me, maybe you will believe Flowmaster.

http://www.ask.com/bar?q=engine+back...kpressure.html

 

ok you got me i will believe the muffler company! lol

 

Cut old off behind the cat and put a y pipe and run 2.5" all the way back to 3.5" tips sounds sweet. NO cracks and pops sounds very performace

 

MBRP Here, wouldn't own anything else.

 

If you want true duals you won't find a decent kit out there.

I'm running true dual and I can honestly say the magnaflow X pipe muffler (jumbo size) with 3" pipes running before the y pipe sounds great and performs exceptionally well.

Not overly obnoxious but you really hear it at WOT.

 

Here's a link to my project. Sound clips and pics are included:

https://www.f150online.com/forums/20...als-roush.html

 

While it may "sound" very performance...

How does it PERFORM ?

 

True duals with high flow cats, an X-pipe, a muffler of your choice (Magnaflow, Flowmaster, Borla.....), 3.5 X 18 inch tips, and it all being held together by 2.5 inch manderel bent pipes. I don't think you can get a better sounding setup.

 

Performance increase is marginal. A tuner is a better investment for more power.

 

Runs great, pulls boat good, im not sure if you are trying to say i lost performace on my truck when i did this? if that is the case my truck never had it becasue its the same as day one only with a lil more bark