Removed mine from fuel rail and discovered it was pretty clogged with little bits of black rubber. Uh oh... Ordered a new one from hesco and oops, did not seat properly. Seems my fuel rail accepts an older style fpr with a straight neck, not the newer one with a molded ring along the base. Hesco sent another one, same problem. Ended up giving to a buddy. Had to special order the correct unit from dodge dealer, ugh $$.
Replaced all fuel lines and she runs better than ever. Added an in line spin on fuel filter making filter changes a breeze
Now to resolve cold start issues and crank to cam correlation fault... It's always something