has anybody run the new airdog 2 system yet? it claims to be really good. no need for larger pickup tubes in the tanks and it is supposed to be a direct replacment for our fuel systems.....

 

I think that it was wmiller that was looking at that system and another. There was a thread started about this probably 2-3 months ago. You might want to shoot him a PM if he doesnt post up in this thread

 

Joe, if you plan to run your dual tanks forget about it and go with a regulated return with like a fuel lab pump or something. even with the air dog you will need to do something else with the fuel system. reroute lines, regulate return, etc. then the AD2 has a return off the pump that can only go to one tank b/c it goes into the fill tube. then you have your other return... why return 2 different times?? if you were going to run competition and use a fuel cell or just one of the 2 tanks i'd say go for it, but it complicates things A LOT to try to use both tanks and have a good efficient fuel system with the AD2.

 

well what if i said i would only run the rear tank since i have to replace it due to rust anyway. i plan on installing the 38 gallon tank that jim did on his rig. if i just ditch the front tank then it sounds liek it might work out better. i am calling pureflow technology tomarrow to get an exact rundown on how it hooks to our trucks and what all is modified

 

i will tell you what Joe, i bet i can come up with a better idea for you to hook it up than pureflow can. we talked to them when my brother got his AD2 for his dodge. they were literally NO HELP.. its pretty simple though. the pump is regulated internally so you need to make sure that you can get it to pump over 70psi. then set up a RR setup using the AD2. another thing i had thought of was using dual AD2 pumps, one per tank. run each AD pump to one head. then you run the returns up to a 2 line regulator on the front of the engine like i already have. then you can run the returns from the pumps to each fuel fill and it will work correctly and get rid of the selector valve and run both tanks at the same time. only bad thing is that both tanks aren't the same size so one would run out before the other. that was just a quick thought though.. LoL

 

well if i planned on kit bashing it then i would finish the kit i have started building.....lol

 

were you just wanting to throw a pump on and go??? cuz you know that won't work. definitely not a throw on and go thing. still gotta build the rest of the fuel system. take out the mech. pump and fuel bowl and rerun those lines starting with the supply to the driver side rear of the head, out the front, across to the front passenger, then out the back of the passenger and out to the return and regulate. what were your thoughts for using the AD2??

 

the ad2 was to take my headaches away since i am so swamped at work. i wanted to have a good fuel system behind the truck before i replace the injectors......... my current homemade set up is a pair of filters/water sep off a cat motor, a superduty fuel pump and an aeromotive regulator-not purchased yet. i dont have the lines or fittings to redo under the hood yet nor the parts to connect my filters and pump to the stock stuff on the frame. i was looking for a bolt on system that wont break the bank

 

see and i don't think you will get that with the AD2 b/c you still gotta get rid of the factory pump and bowl. i assume you can leave the bowl, but the bowl and FPR are quite restrictive in our systems. if you want i have the parts list from my CPR if you want me to tell you what fittings and everything were needed and where they go so you can complete your system. probably end up being the same as buying the AD2(without modding the engine lines). if nothing else you can research the costs you would have in finishing the system you started vs. the AD2???

 

That's exactly what I did with my Black Truck, but I used the 33 gal Bronco tank at the time.
If you go with one tank it should work fine.

 

Beans!
Go for the Beans!

 

The kit is designed very well for a super duty but quite poorly for an OBS. The super duty uses a larger fill neck hose so the adapter for the return line is as good as a paper weight. I threw mine away and made one to fit it. I have to be real carefull how I am sitting to fill my front tank (where the return goes) because air will trap in it.

When I talked to Pureflow they seemed very knowledgeable but once I got into the project I found out they didnt have a clue. for starters the return line that is supposed to be very minimal vapors will dump my back tank with in about 15 miles and fill my front. This wont be a problem if your only gonna run 1 tank

They also said it should be stand alone but our stock fuel bowl cant handle the pressure and will leak. Pureflow says you can plumb it straight to your heads but the guy that did my motor said there was no way to do direct and ended up putting fuel lines, bowl and HPOP resivour from a 99-03 on mine. I don't know how all the plumbing on the heads works enough to verify if this is true or not

Right now the way mine sits I have a super duty fuel system with an AD2 in place of the electric fuel pump. Not to hijack Joe but if anyone know how to make the AD2 plumb direct to the heads I would like to do away with the fuel bowl entirely

 

Does the AD2 just have one feed line coming out of it?
If so it would have to be a dead-head system like the Super Duty. Personally I'd rather have a flow thru like the OBS.

It works like this:
Dead head: You feed the fuel line from the pump to the port on each head (front or back) then plug the port in the opposite end of the head. Done.
Flow thru: Feed the fuel to one port and it comes out the other into a regulator. The regulator is a restriction that creates the pressure and dumps the extra fuel back to the tank.

Upgraded fuel system is really simple with one tank...

 

so you ran yours as a deadhead system???? if you wanna delete the bowl you will need to of course take the bowl out, the fuel pump, and the steel lines that go into the back of the heads out. then start by running a line from the steel factory supply line to the rear port on the driver side head. on your stock FPR there were 2 lines that came from the heads to the front of the regulator.. use it now. you will use the longer FPR line to run from the front of the driver side head to the passenger. then out of the rear passenger side head to a regulator and out the factory steel return. i wouldn't make it a dead head system either. if you can run your stock return back to the tanks then do it just like i told you since your AD2 has filters and everything already on it. personally i would rather use a fuel lab pump, upgrade to larger lines, then plumb it all up to one tank or a fuel cell and be done. be better than running the AD2. LoL. i'm kinda an AD2 hater anyways b/c of how dumb pureflow has proven to be. i don't trust my fuel system to stupid people.

 

I'm pretty sure mine is dead headed right now. The reason I bought the AD2 was because i have a cam out of a 99-03 motor so no fuel lobe and the AD2 is supposed to be completly a stand alone. This way i wouldnt have to switch the bowl and all that junk. My mechanic said it could not be done and switched out all my stuff for super duty fuel system parts.
Looking back on it I would have never bought an AD and either put a super duty fuel pump with the plumbing thats on it now or home made a unit