Air Cleaner and Flowmaster Muffler 4.0

[Bnish Explorer]

I have a 2009 with the 4.0 engine. Was looking for better mpg and have the engine run more efficiently. I added the KKM air cleaner and that increased throttle response and made the Explorer .7 seconds faster 0-60. I then removed the factory muffler and installed a Flowmaster 50 Series Delta muffler. I is a bit louder but I like the new sound, if there is a need for a You Tube video of how it sounds just let me know and I will post the videos on you tube.
I like the results of the air cleaner and muffler.

 

[Sams01XplrSprt]

post a video of it on youtube and put the link on here

 

[Sams01XplrSprt]

where the link of ur exhaust on youtube can u post it up on here

 

[06Xplorer]

yea i'd love to see the video too. I have a 2006 4.0 and i wanna do the same mods too it. can you do an outside and inside cab video? that'd be awesome

 

[ocmnelson]

What size piping did you use or did you keep the stock pipe on?