Originally Posted by alexrose
New to this forum. Have a new 2007 F150 super cab with the 5.4. My question is has anyone added duals to a unit such as mine? How would it affect the warranty. Thought it might add a nice touch. Does such a conversion require dual catalytic converters? Is there something available such as a conversion kit?
I BELIEVE YOUR TRUCK HAS THREE CONVERTOR'S ON IT. ALL THE ONES I HAVE DONE IS TO SPLIT THE PIPE BEHIND THE MUFFLER , OR USE A SINGLE INLET DUAL OUTLET MUFFLER, I DON'T THINK THIS VOIDS ANY OF THE WARRANTY, I READ SOMEWHERE THAT IT WAS YOUR RIGHT TO INSTALL ANY AFTER MARKET TYPE EXHAUST ,OF COURSE YOU SHOULD KEEP THE CONVERTOR'S IN PLACE, I HAVE A 2000 W/SINGLE THREE INCH WITH NO MUFFLER, ITS NOT LIKE YOU HAVE NO BAFFLING WITH THREE CONVERTOR'S , GOOD THROATY SOUND OF COURSE LOUDER THAN NORMAL BUT NOT QUITE AS LOUD AFTER IT WARMS UP AND ON HIGHWAY NOT SO BAD , MY TRUCK HAS BEEN THE WAY SINCE 2000.
HOPE THAT HELPS.