Just want to give you food for thought,if you opened up the whole fuel system from the tank to the injection pump,but left one restriction in suction side of the system,that whole system can 0NLY flow what the restriction, in this case the fuel module, will let atmopheric pressure push thru that resriction. A chain is only as strong as its weakest link.Cummins Thunder said:I took michael's advise and didn't fool with it (the line in the tank)... I installed the system myself in about four hours, you just cut the steel line back by the tank and attach about a foot of the included hose with two hose clamps, then attach the other end to the LP which you have moved to the frame rail, then its on to the fuel canister, next you install an included inline fuel pressure tap and then you finish up at the inj pump. pretty easy, just takes some planing and time.
The results have been great! But I am not making 638HP... In that case you would probably need to do the pick up line.
If you would like I can post some pics of my install.
Hot Rod Diesels
Hot Rod Diesels 281-924-4955, Michael
CJ
Huff N Puff said:Just want to give you food for thought,if you opened up the whole fuel system from the tank to the injection pump,but left one restriction in suction side of the system,that whole system can 0NLY flow what the restriction, in this case the fuel module, will let atmopheric pressure push thru that resriction. A chain is only as strong as its weakest link.
amnewsom said:I am thinking of doing a big line kit and have read the same argument before, why open it up then not change the tank line. The trouble and time you spend on that compared to the rest of it just doesnt add up.
The whole point is to a. give the system a steady supply b. maybe move the pump c. be an easy upgrade. I will probably look into the Vulcan kit seems like the best for overall cost vs equipment.
Huff N Puff said:Since the engineers at Dodge have redesigned the old fuel module and relaced it with a P/N 05175538AA,which basicly admits that the old fuel module was a problem,causing VP44 failures. My suggestion is to rid your system of this known failure which not only is a restriction, it also is a know source of air leaks into the fuel stream.
Huff N Puff said:Since the engineers at Dodge have redesigned the old fuel module and relaced it with a P/N 05175538AA,which basicly admits that the old fuel module was a problem,causing VP44 failures.
Mopar is installing the updated fuel pump module on every warranty VP44 install. Its a an expensive repair in addition to the VP44. I dont think they'd do that expensive repair for free on alot of trucks unless they really thought it was a real problem,and worth the trouble.nps said:They redesigned the module for the 3rd gen CP then backfitted it into the 2nd gen as a LP replacement. If it is so good, then why won't it put out fuel pressure? Would you run one?
I agree the fuel module is a restriction. But pointing to the POS new module for proof of the old module's limitations is a stretch.
Huff N Puff said:Mopar is installing the updated fuel pump module on every warranty VP44 install. Its a an expensive repair in addition to the VP44. I dont think they'd do that expensive repair for free on alot of trucks unless they really thought it was a real problem,and worth the trouble.
JApol said:With me having an 05, do I need to worry about the VP44 crapping out in a few years?