I am going to agree with Lizzy on this one. Higher fuel pres can help in some instances. The computer will adjust itself if air/fuel gets out of tolerance. I honestly cannot see it hurting. It happens to be a litle trick the Mustang guys use to get a few extra ponies, jack up fuel pres, you then get more fuel in per opening of the injector (higher pres through the same size orifice equals more flow)
