Went to fill up today for the first time since doing the pump. Hadn't driven the car too much since really.
As soon as I'd finished filling up fuel started pissing out of the bottom of the car. Since I hadn't finished the ground wires yet, the back seat wasn't in, so I opened up the tank cover to have a look at what was going on. Both fuel lines looked like they'd blown off, or at least half off, and fuel fuel was running down the side of the tank. Not heaps, but enough to create a decent sized puddle underneath the car.
Pushed the fuel lines back on and good as new. The fuel gauge is still reading full, so I'm guessing it didn't loose much.
My uneducated, non-mechanic suggestion is that the higher fuel pressure from the new pump is responsible, so I'll throw a couple of hose clamps on for good measure.
Next weekend I'm going to try and install the adjustable FPR and adjust the fuel pressure back down to stock until I get it tuned. It's running really rich, and economy is up about 1-2L/100 (Normally get 12-13L/100, now sitting at 14+L/100).
Also keen to try and get the wideband on now and see what the AFRs are at before and after adjusting the FPR.