Joseph Donnelly
TDR MEMBER
DD1s are somewhat stronger than 275 Bosch RV injectors. You can put them in with no boost module. With DD2 or DD3 you need the boost module, but you won't touch the injection pump harness. The 2s and 3s are much stronger, I think the DD3s are around 110 hp over stock.
If you go to aftermarket injectors (extrude honed), quality control and procedures are critical. This honing process has been criticized by some and many have expressed concern or questions, based on some poor results. It turns out that the poor results are usually a function of one or more of the following: using used injectors or recon injectors; using the wrong base injectors for the application; rudimentary honing steps or media selection; inadequate inspection, testing and quality control of materials and procedures; poor or no pop testing before and after; failure to control hone pressures or volumes/times adequately; failure to verify exactly correct spray angles and patterns before and after honing.
I was given a tour by Lawrence (Diesel Dynamics) recently and he explained his procedures and quality control to me. I learned two things (1) I would not get generic extrude honed injectors or shop for cheapest price = least amount of senior level labor invested; (2) I had to have a set of his Super Mental Stage 6 injectors for my poor old Sickly Ram. Sickly runs noticeably smoother and is more responsive with DD6's
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Just my opinion; hope the info helps you decide on the upgrades for your Ram.
If you go to aftermarket injectors (extrude honed), quality control and procedures are critical. This honing process has been criticized by some and many have expressed concern or questions, based on some poor results. It turns out that the poor results are usually a function of one or more of the following: using used injectors or recon injectors; using the wrong base injectors for the application; rudimentary honing steps or media selection; inadequate inspection, testing and quality control of materials and procedures; poor or no pop testing before and after; failure to control hone pressures or volumes/times adequately; failure to verify exactly correct spray angles and patterns before and after honing.
I was given a tour by Lawrence (Diesel Dynamics) recently and he explained his procedures and quality control to me. I learned two things (1) I would not get generic extrude honed injectors or shop for cheapest price = least amount of senior level labor invested; (2) I had to have a set of his Super Mental Stage 6 injectors for my poor old Sickly Ram. Sickly runs noticeably smoother and is more responsive with DD6's

Just my opinion; hope the info helps you decide on the upgrades for your Ram.