I have an 08 fx4, compared to my 05 xlt, this exghaust right from the factory is loud. Has anyone else taken notice? Do the 09's acutally sound better?

 

In later model 2005 trucks they discontinued the very restrictive 4 cat system and its now a two cat system. The mufflers got a couple inches shorter also so they have a little more sound. The '04 - '05s have probably the quietest exhausts F150s ever had.

2009s must be a hint louder running the same cat system with a 2.75" exhaust, and the muffler is open & hollow similar to a chamber design, but its direct flowing unlike any other muffler from the past.

 

I have noticed that also. My '08 is louder than my '04. Both stock 5.4s.

 

My friend has a 2008, & his F-150 is a bit louder than the stock exhaust that WAS on my 2007!

 

Those with stock 2008 exhausts, if anyone is bored enough would someone measure the width & length of the stock mufflers and cats? I would be real interested to know the specs. It sounds like the 2008s have a different muffler than what was offered in previous years. I know my 2004 stock muffler was a 9x12x32".

 

That's interesting, I'm curious about specs too!

 

7.5x9.5x31 cant help with the cats we got 6'' of wet snow today.Im not that bored lol.The cats are huge 6x12 maybe

 

Quite a bit louder, most every one who rides in my truck notices it. Some have asked if I had a pipes installed. I like the sound, but it lowers my mileage because I'll give it a little extra gas just to hear the pipes.

 

My brother has an 06 fx4, my exhaust sounds way better.. He has driven it a few times and said mine has a little more power, i know the hp & tq numbers are the same. But, i will also say my 08 has a little more power than my 05 xlt 5.4. Still a bit sluggish though.

 

I have an '06 with the 5.4 and put on a single-side MagnaFlow system. Once I graduated college and started working, I decided to take it off and go back to stock. So...I ended up swapping my MagnaFlow with a stock system from an '08 and I really feel like it was louder than the stock '06. I love the sound and definitely prefer it over the MagnaFlow.

 

I liked the sound of my brothers 2008 fx2 but now with his roush exhaust on, it sound way better however louder. I am interested to see my foose exhaust compared to his roush.