Limits of stock 1nzfe found once and for all.

[pimp my yaris]

Mabe in time. Haven't had any problems with them so far. I need to make a return line for my stock fuel rail first. Also add a external regulator that will increase fuel pressure with boost. My Tc injectors are maxed at 12psi and stock fuel pressure.

[fnkngrv]

Originally Posted by pimp my yaris

Mabe in time. Haven't had any problems with them so far. I need to make a return line for my stock fuel rail first. Also add a external regulator that will increase fuel pressure with boost. My Tc injectors are maxed at 12psi and stock fuel pressure.

CTScott and I were talking about this earlier this evening in reference to my car as well. I have my replacement motor in and running, but I need to replace the oil pan sub assembly this weekend before I consider it really "back on the road". I do however have my Autometer Fuel Pressure Gauge installed and today doing a test drive of about 10 miles the FP is staying at roughly 48psi regardless of being at 0, 5, or 9psi of boost. We need to be at a 1:1 so technically at 9psi of boost then the FP should be at roughly 53psi as per our hunches. You said that you are already running a 255lph pump right and that you don't think that it is a true Walboro? IMHO if you are going to be getting into the tank anyway to upgrade your system then I would change to a Walboro 190lhp since you aren't going to be hitting over 300-320hp so that you aren't returning a heap ton of heated fuel. If all goes well and I have the car back on the road by the beginning of next week then I will go ahead and try to make a video showing my FP at the different levels of boost up to 6-8psi so that people can see.