4g64 max injector pulse width

[Scorp1us]

Ok, my search is in for the max injector pulse width (or utilization %) on our stock 270cc injectors. I need this to do my PSI/cc calculations of course.

I'm hoping some of you have had the time to play with it and see what it was.

I did do the rough math, and if we use the max we can now, I'll need 550s to run 15psi. Maybe you can tell me what you have and how much you're boosting? I do need you to be aware that I'm talking about at stock fuel pressure though.

Thanks.

[shadowwraith]

As a rule of thumb, you should calculate for 80% injector pulse width. They may function fine at a higher rate but this will give you some lee-way so that you know they won't be sticking open at higher pressures. Guidlines for the 4g63 should work just as well for the 4g64. Check out www.roadraceengineering.com for more on that.

-Travis