2002 ctd not running right

[CUMMINSDIESELPWR]

i do know there are i think 3 different flavors of vp44 go to bluechip diesel they explain it there, could be possibl you got a vp44x which is an economy vp just a thought.

[dripley]

Are there maybe injection pumps that have different fuel solenoids on them, sometimes you hear of 2 diff trucks running same chip or tuner, one smokes and the other one has more power. Seems to be the same with all including edge and quad, some people boost to 30, and some including myslf only 25psi.

There are differant pumps. SO on the autos and 5 speeds, HO on the six speeds. There is also hotrod vp. I am not sure of the differances in the pumps. Blue chip is a good place to get info on that. My truck will boost to 34#. My waste gate opens fully at 34# to35#, that and the Ottomind tuner on the truck allows me to do that. the only way i could pass 35# is for the waste gate not to open. i while back i lost the ground to my tuner and could only push 25# to26#. i repaired the ground wire and all returned to normal I put a new vp from Blue chip on my truck about a 1 1/2 years ago. I have had the Ottomind for 6 years and there was no differance in performance after the change. I just swapped an HO fo an HO. The hotrod vp is another story and i know nothing of them. I wish i could explain this better but my knowledge is limited on this subject. so maybe we can get a little help from some one.

[Eforbes]

Yes blue chip does have an economy vp that gives clean power, but when i removed the apps to install bd cover on vp, i did not see any markings on pump other than standard numbers and such.