congrats on da new monster truck, looks like a keeper...
there is no DPF on the 7.3
this engine is PRE the newer emissions standards (ALL of them)
it is also PRE the ultra low sulfur fuel
and it's loud because the COMPRESSION for diesels is higher,
so the EXPLOSION of fuel/air under pressure is greater...
that's the basis and basic of diesel combustion (no spark plugs)
keep the filters and lubricants UP to date and give the turbo 1-2 minutes of IDLE time to cool down...
after hard driving.
don't let it idle very long ANYTIME.
1-2 minutes at start up MAX (in cold weather) and just get going...
there are chips, exhaust enhancements, air box tweaks, gear mods and 1000s of aftermarkets doo dads for this truck.
but the best place 4 CYBER advice is on one of the many forums dedicated to this vehicle....
i like the YAHOO powerstroke group for reliable advice from a ford MASTER level mechanic...
but there are a dozen popular powerstroke forums out there.