I'm planning on installing a "Helper" pump pretty soon. A friend of mine has one brand new he bought for his cummins, but this pump is rated at 11 psi, to low for cummins and I can get it for free Is it going to be safe to add and am I going to feel a difference in power? I will also install a Racor filter and planning on eliminating the quick fuel connections before the pump. Anything else I should do while I'm under there?

 

There should be no need for a helper pump (and no diff in power) if the main pump is in good shape, and if it is worn out a helper pump is a band-aid fix.

does your fuel pressure drop significantly under load?

'while your there' do the ITP in-tank kit and possibly shim the regulator if fuel pressure low.

 

i don't have a fuel pressure gauge yet. at wot it seems to die off, the truck seems to loose a bit of power.

 

would installing the pump have a negative impact on the trucks performance. i read Guzzle's write up and he liked how his Helper pump made his truck run.

 

Most folks go with the Carter pump that is rated for 4-6 psi. I went with the Carter pump that is almost identical, but is rated for 5-7 psi. Aside from an electrical gremlin I'm still chasing, no operational problems whatsoever.

I did not, however, notice any real performance gain, probably due to having already been in possession of a healthy pump. The only reason I went with the Carter pump is to overcome any pressure loss in the Baldwin filter so I would not put any additional strain on the stocker.

 

well if there's no benifite i'm not gonna waste my time on this.

i've looked into the ITP intank mod, looks like this will be my next mod after installing my fuel pressure gauge.