jmetcalfe Report post Posted August 23 I have gotten back in the motorhome ownership and and am scared of breaking down again at a remote location of going into limp mode because of def issues, I have purchased a 2015 tiffin allegro bus 45ft with 450 hp Cummins, my question is is there some added component that I can purchase to keep onboard in case this ever happens again? Thanks in advance and glad to be back! Share this post Link to post Share on other sites
elkhartjim Report post Posted August 24 Join this forum and do a "DEF" search. Lots of good information. https://rvforums.com/ Share this post Link to post Share on other sites
