i run a low psi set up. holly pump that comes with the regulator. Jazz makes a 1 gallon cell that fit in the bat location very nice. i put my pump right in place of the horns and then the regulator on the wheelwell for flow eas. just easy to get to each time to flow it.
i dont run a return, i purge it a little during my burnout. that gets the air out. return may be smart tho.
hope this helps a little

how do i "flow"?? the fuel system..

saw you next out at osw a few weeks backk.. damn the car is sick..

You'll need to buy the tool from NX. It's basically a glorified fuel pressure guage.

Basically it works on the principle of specific gravity. Temperature, pressure, and humidity all affect the specific gravity of the fuel. When you call NX and get the jet pattern for your kit, it'll be rated at a specific PSI. You'll generally get a very safe tune-up from NX. They'll ask for the kit you have, the nozzle you're using, the amount of nitrous you're going to spray, and then you'll get different fuel pill sizes based on the fuel pressure you're going to run. When you "flow" the kit you fine tune the fuel pressure based on the weather conditions. Basic temperature changes can vary fuel pressure by 1/2 of a PSI, even if you don't mess with the regulator. And because flow is directly proportional to the square root of the pressure, a very small change in fuel pressure can result in a big A/F ratio change.

This is why a lot of the Pro-Mod racers that use nitrous use a high-pressure fuel system. A slight change in fuel pressure affects a high-pressure system much less than it does a low-pressure system. And when you're spraying the 1,000 shot, there isn't a whole lot of room for error.

That is why if you have a fogger, you NEED a flow tool.

I made my own, but buying one is easy if you dont know how. the rest, as he said^^

I use a mallory 140 on my stand alone. Its a good pump, and is quiet.. atleast compared to a holley