Guys this week I'm ordering an Airdog for my truck. In a month or so I'll be putting in Warren 175cc injectors with stock nozzles as well as machining my turbo to 64.7x88mm compressor wheel. For cost sake, I want to order the Airdog 150 and have that feed the stock pump. Right now I have the blue spring and I'll be installing 6.4 banjo bolts. Will the Airdog 150 feeding the stock pump keep up with the 175/stocks? Right now I've got 65psi at idle but it drops when I lay into it with my race tune. The only other option for me is the Airdog 2 165. But I'd like to stick with the Airdog 150 feeding stock if I can

 

Any reason to just not feed the fuel bowl with the 150?

The AirDog deliver clean fuel with no bubbles and at 2 micron. Stock pump at 5 micro and doesn't remove bubbles. And IIRC, it's adjustable in pressure (I think. I've got the 165). Plug the return line, dump the blue spring and turn the pump up to 65psi.

No need for regulated return or blue spring.... and skip the bolts.

 

The Airdog 150 is just a lift pump, it only puts out like 10-15psi. The Airdog 2 165 can put out 65psi. But it's also $150 more that I don't necessarily want to spend. But yes you are correct if I buy the Airdog 2 I can use that as a regulator

 

I think the 165 can do 75psi. If I were spending the money, I'd do the 165 and ditch the stock pump. That's a bunch of money for 10psi and then have to replace both if something goes south.

I've even ditched the upper filter, that's a few $$ saved and the 2 micron filters are spin on.... no more fuel baths! Change all the filters twice and your at $150.

the 150 will supply clean fuel to the stock pump, but your limiting yourself to the output of the pump. When it dies, you'll be wishing you had the 165.

 

So do you feed up to the factory fuel bowl with your ad2? Feed the heads directly? I also want to emilinste the dead head issue

 

The previous owner had it feed the fuel bowl, not the heads directly. But from reading, the banjo bolts are not worth the effort and I've ditched the upper bowl filter and blue spring. I also plugged the return from the bowl.... it gets 65psi straight from the pump at 2 microns and zero air... maybe even more than 65psi, I haven't checked it lately.

 

So where does your return off the heads go to?

 

You'd need to plumb the rear of the heads to return to the tank, but then the pump would run pretty hard and a regulated return defeats the blue spring.

The pump returns air and any fuel it doesn't need to make the pressure you set. No need for a return really.... unless you plumb both sides of the head? Skip the bowl completely.

 

Could you draw me up a quick diagram of how your systems set up? Sounds like I wanna do the same thing

 

They are plugged. Stock system returns off the bowl, not the heads. Regulated return off the heads, but defeats the blue spring. Why you plumb the Airdog direct and remove the spring and most plug the return from the bowl....

That is those that know what to do and how it really works. You'll see a bunch of AirDog pumps to bowl, stock springs and filters with regulated returns.

 

If your going to run a 165 pump, you'll need a y pipe. From pump to pipe, one in front of each head and one in the back. No return from the heads. Run the 165 at 65psi, use the included filter. Use stock banjos to feed the heads... very simple set-up. You'll feed a y on each side, one side of the y to each end of the head....

 

Ok I think I see what you're saying. I'm going to draw up a diagram later I'll put it on here and see if it matches with what you're saying

 

Tell me about the turbo your doing?

 

I'm sending it out to a place in Oregon to get it machined. Same specs as an mtw stage 2. It's a stock 03 turbo right now, and I'm machining the compressor side to 64.7x88mm keeping exhaust side the same as stock

 

Why not just a stage 2 turbo off the shelf?