Fuel pressure regulator question

ShortThrow50

Member
Oct 22, 2006
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Im trying to tackle another problem which some of you know of. The question is this. AT idle how high should I be able to get the pressure to go with this unit?
http://mustangsunlimited.com/itemdy00.asp?T1=D5005+01

The reason i ask is because i suspect a problem with fuel. I have 190 fuel pump and 24 pound injectors with stock rails. I can adjust it to about 43 pounds with the vacuum line disconnected. Shouldnt i be able to get it much higher than that? Not that i would want to but im just curious thinking that maybe on wot throttle that my car isnt getting the fuel it needs which is causing serious hp loss.
Another thing i noticed with the hood up, when u turn the key on, you hear the fuel pump prime and a hissing noise coming from the pressure regulator i presume. Let me know, thanks