I've always liked the P-pump trucks. It's "honest" power, right? Not just plugging in a box. Traditionally, I've rooted for them at the track and I smile when I see (hear) one on the street. I've got an affinity for things mechanical as opposed to electronic. I think many diesel enthusiasts feel this way.
However, the CR system is simply more efficient than a purely mechanical set up. It is many times more complicated and stand-alone tuning is new to Cummins owners. I think it will be only a very short time until Cummins CR trucks with stand-alone tuning (and now EFI) will regularly be beating the mechanical trucks at the pulls and drags.
I've had a change of heart about the CR and electronic controls. I now understand that making big power is not simply as easy as plugging in a box. While they are easier and cheaper for the regular guy to gain some power over factory levels, they are more difficult and complicated to get right in all-out race trim. You have to be just as mechanically proficient as before, and be knowledgeable about the electronics/computers.
I applaud those that have taken the lead in stand-alone tuning.