At the moment I'm upgrading my fuel system.
My plan was to install RC PL-9 1200cc injectors. But I already have PL-4 1000cc Bosch Style injectors which I bought a few years ago for another 4banger project which never comes to the end. So I modified the PL-4 injectors and now they fit the stock 1UZ intake and fuel rail. So I ordered another four RC PL-4 1000 Bosch Style injectors. They should be here in about 2-3 weeks. In this time I will upgrade the fuel pump and fuel lines.
Here some pics of the SX Performance fuel pump (18201), the PL-4 injectors and the TRD thermostat (71°C).
Walbro 255L/h fuel pump vs SX Performance fuel pump
more than two month are over and I spent some time on my project so it's time for an update. Let's start where I end:
You know, I upgraded my fuel system. Let's have a look at the parts I installed.
With the SX Performance Fuel Pump I installed new fuel lines, too. 16mm from pump to the fuel rails and a 12mm return line.
But I had problems with the flow rates/fuel pressure of the SX Performance Fuel Pump. I switched from pump gas to E85 so I need about 36% more flow. Only the SX pump was not enough so I add a Walbro fuel pump into the tank.
To connect the two fuel pumps I use this custom Y-connector (16mm in and out with 12mm side feed):
With this set up I got better results but it seems that the SX pump is not ok because the fuel pressure drop at higher rpms/boost. So I remove the SX pump and replaced it with an In-Line-Walbro. But I have no pics of it right now. After that the fuel pressure is at the level it should be.