I have a 18' oval magnaflow si\so with stock piping except for 3.5 18" tip. Looking to get just a tad more deep,mellow agressivness and it looks like Borla proxs, Magna pack or dynamax bullet. Been searching for awhile to find muffler swaps with these on a 5.4 Tips\advice

 

nobody has done a muffler swap with these and posted a video...

 

Migdaddy has a video of siso bullet but with 3" piping

 

http://www.youtube.com/watch?v=CAEzsQeKp7Y - migdaddy 3" bullet
http://www.youtube.com/watch?v=wci5Dv57r1U - 3" magnapack
http://www.youtube.com/watch?v=od7X8EKhfJg - jerry's 3" bullet

 

Cool thanks man Anyone gotta clip of the Borla Pro-XS si\so ? When they say 3" , does that mean that the in side of the muffler is 2.5 (stock) and the exit is 3" all the way back ? Also, would a 18" x 4" tip sound good or leave it at 3" ?

 

I was going to post my video up but jrmatson08 bet me to it. Mine is the second video down. It's 3" from the Y-pipe all the way back. I prefer a 4" tip on a SI/SO myself.

 

I think migdaddy and jerry have 3" piping all the way back too

 

Cool ! Cant seem to find a Borla proxs si\so anywhere