I've installed two in my car.
The first was a low pressure (5psi) in-line. I put it in front of the tank above the rear axle, on one side of the differential where there is room. Wired it to "key on", it was very handy as I could "charge" an evaporated fuel bowl and get an instant start no matter how long the car had been sitting. The only negative was noise. In spite of rubber insulators the darn thing was noisy as all heck.
The second was with an upgrade to EFI, and is what I am currently running. It is mounted inside the tank, runs about 100 psi, and has a pressure regulator (to 43 psi) and return line:
- New fuel tank since I had to cut a hole in it. Why spend time and money on an old tank? This also requires cutting a hole in the trunk, up high where the spare tire used to go.
- Tanks, Inc. bracket and pump. Since it's a "vertical" tank the bracket had to be extended (welded). The suction end of the pump has a pre-filter to protect the pump internals.
- 3/8" steel supply (used most of my old one, replaced years earlier).
- Large capacity micron filter.
- FAST EZ EFI throttle body
- Pressure regulator mounted on firewall.
- 1/4" steel return line.
- Russel high pressure hose and fittings between each of the items above.
The EFI controller turns the pump on at "key on" to charge the system, same as I did with my earlier setup. Then it fires the injectors several times (if the engine is cold) to make staring easier. Works flawlessly- like a modern car.
Kinda weird having an electrical line that goes into the fuel tank. That's all part of the Tanks system.
Tanks also has a third threaded hole on the flange that is to be used for a vent. I have that plumbed to a one pint surge tank (mounted as high as possible to drain by gravity back to the tank) and then to a carbon canister from a late model donor. The canister is mounted inside the drivers side front fender and that is purged to the air cleaner. That plumbing is all inexpensive: a combination of low pressure fuel hose (tank to purge). 1/2" fuel resistant air line (sort of like PEX) and various diameters of vacuum hoses. That allowed me to plug the vent hole in my fuel cap and totally seal the system, so I have no more fuel stink in my basement garage.
Only drawback is cost. Not cheap.
