25psi.. they wont even have an even spray pattern.. Atleast run 35psi
Mine car starts bucking and poping if i try to run anything under 30psi..
They are designed to run around 35psi or more
I need to get off my ass one weekend, get some 2" or 2.25" exhaust pipe, and finish up all of the cold side piping and get the intercoolers on, then get it tuned, blow a few headgaskets here and there then I'll be done.