Originally Posted by KROSSFIRE1988
I wil soon have time to work on my XF that ived had for three yrs, coming off my second deployment in three years and wanna mess with my baby! Im contemplating a new exhaust for the XF. My idea is to remove the rear cats and run a single pipe to the stock exhaust. I also want to open the muffler and remove all the insulation and the perforated kidney things inside then wrapping the muffler in sound heat/deading material . I am wondering of the possible negative effects on it. Is it goin to mess with the engine at all (backpressure). Im lookin for a deeper sound out of the exhaust. Thoughts and experience much appreciated! Some other mods i wanna do are a CAI ,Eurocharged Tune, Injectors, NK plugs and Magnecor 8mm wires. Ay ideas about HP gain with these!
If you're just looking for a deeper sound, i'd go with the Megan Racing M-RS muffler. It's a "universal" type, that is not a direct bolt on, but can be easily made to fit (welding and a small addition of pipe that the dude at the muffler shop had to bend, not a big deal). I have one on my XF ('05 Black N/A Coupe), and it sounds REALLY deep. Bit of a drone at freeway cruising speeds (65-70mph in 6th gear), or at low RPM in 4th gear (40-45mph).
I have a crappy vid of my car before and after I switched mufflers. I'll post it for ya. There are some other vids on youtube as well. If you just want it to be loud, and deep, and don't mind the drone (it's really not that bad), i'd go with this muffler. Oh, and did I mention it only costs $149.95. (
Megan Racing Muffler)
Before & After Muffler Vid
And here are a couple of pics (more in my gallery) of the muffler on my XF.
(I know it's dirty, but I was just so excited when I took the pics...
)
Edit: Feel free to PM me if you have any questions!