i got fuel pressure regulator and wen I instoled it was working 30psI and car was dieing and then i changed to 40psi and car was ok but fuel pump was making nose like it was working without pressere and i chaned on 50 psi and now there is no nose,only littel onder car and car pulls geat, it gave me big different but i am scared because I don,t want that it worked on very big ressure, I just whant littel more pressure. hoo know what is capris fuel pressure???