even with the 255 pump ! my car doesn't seem to like it, it started surging pretty bad @ 39-40, but i think my 02's are on the way out ! i ran the car and it felt better....... i'll have to do some testing this friday at the track hoping to get low 12's @ 110-112 out of it this time.anywhere between 40-45
i believe everyone is talking about with the vac line disconnected ! i hope ?damn i have a 255 fuel pump and 24lbs inj. and if a were to run 38-39 of fuel psi. my car would feel weak. i would have to run the pressure up to 50psi with the vacuum line disconnected just so i could get 43-44 psi
so you are running 50 with the vac line off and 43-44 with it on ?damn i have a 255 fuel pump and 24lbs inj. and if a were to run 38-39 of fuel psi. my car would feel weak. i would have to run the pressure up to 50psi with the vacuum line disconnected just so i could get 43-44 psi
if your fuel pressure isn't dropping more than 1 psi when you reconnect vac to your fpr then its bad ! it should lower it about 6-8 psi maybe more maybe less but definatly more than 1 psi !That is the right way to adjust your fuel pressure right?? Adjust it with the vac line disconnected then reconnect it and the fuel pressure should drop a bit. Mine dropped like 1 that's it.
yeah it does but it will adapt to a point ! and changing the psi mainly effects wide open performance. because then the ecu can't adapt because the o2's quit reading. my car has a surge at idle and the only way to get it to go away is to lower my psi and clock my c&l meter, which is probobly caused by bad o2's ! but changing fuel pressure does help......Do people STILL think changing fuel pressure will do anything?
unless you have disabled the adaptive strategy you are wasting your time.