AirDog II Air/Fuel Separation System DF-165 (w/ Adjustable Regulator)

1989-2012 Dodge 5.9L & 6.7L Cummins

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(111 Ratings, 6 Reviews) Average Rating:
Nate (south Florida) 1/22/2014 2:49 PM
The first pump went out in 3 months and the second one is sounding funny. They were good about the replacement but for the money it cost it should be reliable. The mounting location is way to low and I constantly worry about ripping it off. I wouldn't recommend it especially if you have a vp truck because the loss of fuel pressure when the unit fails could take your injection pump with it.
injector insurance policy
ram3500 (tx) 9/14/2013 9:48 AM
great product! tower motor had to be replaced after 9 months.. called airdog informed them of the problem and within 5 days they had shipped the replacement motor... this is an excellent product and would highly recommend to any diesel owner!!!
So upsetting.
Steve (New Jersey) 10/6/2012 10:15 PM
I installed this unit in my ppump'd 12valve with the intentions of making my truck run smoother and possibly bump up fuel pressure to help feed my bigger injectors and turbo modifications. If I got anything out of this 700 dollar deal, it's a headache. I have a few calls into pureflow in hopes of getting an answer and nothing. My truck is my pride and joy, and this unit makes me hesitate to drive anymore. What a disappointment.
Firedawg (Arizona) 7/2/2011 11:05 PM
I have a 2 wheel drive 2001 Dodge 2500, and the mounting bracket for this had the system only 8 inches off the ground. Due to the fact that the fuel line to the injector pump is only long enough to reach just behind the cross member under the cab. Also, they didn't send all the required hardware, missing 2 bolts and 4 nuts and washers. Luckily my mechanic was creative enough to make his own mounting bracket. I really hate having to rate this so low, because the system is awesome. It's just that a little more thought and care needs to be put into the mounting bracket. There's plenty of power available with this system, even at the preset pressure. I can't wait to see what it can do after more modifications are done.
Essential Upgrade For Every Truck
Lightning (Yellowknife, NT) 5/7/2011 11:48 AM
I think this product deserves more attention than it currently receives. Any aftermarket lift pump is highly suggested for any moderate (or higher) power upgrades, but this pump is the top of my list! Immediately, my EGT's came down when the engine was receiving the fuel it required. 1500F-1350F Anyone with an exhaust brake, or Espar type heater: Small modifications are required, but the pump fits and works excellent. The line leading into the CP4 must be connected 6 inches further back and the pump must be mounted on a slight angle (to accommodate the Espar). There is some overfuelling on start-up, but that's to be expected. I've had zero problems starting the engine manually or with the remote start.
Worked great
Zachariah Munton (usa) 4/4/2011 8:21 AM
if you run any fueling mods especially on the cp3 this pump make a noticeable difference. alot smoother power band.