Upping fuel pressure is usually a bad Idea to try and get more fuel into the engine. The injectors will have a harder time opening and may even deliver less fuel than the injector at stock fuel pressure setting.

The rite thing to do is go bigger injector and tune.

I wrote this thing if you want to take a look.
http://www.talkjdm.com/showthread.ph...927#post115927

To fudge injector size go to.
http://www.rceng.com/technical.aspx?...lsYKf6AqOSn6OJ

:woohoo:

Any way if you want to raise fuel pressure get an fmu or adjustable fuel pressure regulator.