Where to get vacuum for FPR?
why do you need to run a vacume line i was told not to hook my vacume line to it cause the ls1 needed 58psi all the time and with my line hooked up it ran at 45 psi at idle and full throttle 58psi what am i suppose to do? sorry to interfere with the post but thanks
Originally Posted by flippincamaro
why do you need to run a vacume line i was told not to hook my vacume line to it cause the ls1 needed 58psi all the time and with my line hooked up it ran at 45 psi at idle and full throttle 58psi what am i suppose to do? sorry to interfere with the post but thanks
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From: Shreveport, LA
Originally Posted by flippincamaro
why do you need to run a vacume line i was told not to hook my vacume line to it cause the ls1 needed 58psi all the time and with my line hooked up it ran at 45 psi at idle and full throttle 58psi what am i suppose to do? sorry to interfere with the post but thanks
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From: Shreveport, LA
Originally Posted by John_D.
I plan to pull mine off the vent port on the driver's side of the intake.
unless you have changed you IFR table the ls1 looks for a 58 psi rail pressure at all times.
However, most people don't install regulators on these motors without FI or big n20 shots.
Ryan
However, most people don't install regulators on these motors without FI or big n20 shots.
Ryan
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Originally Posted by slow
unless you have changed you IFR table the ls1 looks for a 58 psi rail pressure at all times.
However, most people don't install regulators on these motors without FI or big n20 shots.
Ryan
However, most people don't install regulators on these motors without FI or big n20 shots.
Ryan
If you run a stock (i.e. 97 vette) fpr, then the fuel pressure will be less at idle, and more at wot. That compensates for the vacuum (or lack of it) seen at outlet side of the injector nozzle. Then you have to flatten out the ifr table. (that's if you have the vacuum port hooked up on the fpr...)
Originally Posted by John_D.
Yes, the ifr table has a ramp to it, to account for vacuum trying to suck the fuel out of the injectors at idle, and no vacuum assist at WOT. That's with a constant fuel psi.
If you run a stock (i.e. 97 vette) fpr, then the fuel pressure will be less at idle, and more at wot. That compensates for the vacuum (or lack of it) seen at outlet side of the injector nozzle. Then you have to flatten out the ifr table. (that's if you have the vacuum port hooked up on the fpr...)
If you run a stock (i.e. 97 vette) fpr, then the fuel pressure will be less at idle, and more at wot. That compensates for the vacuum (or lack of it) seen at outlet side of the injector nozzle. Then you have to flatten out the ifr table. (that's if you have the vacuum port hooked up on the fpr...)
Mike
Originally Posted by flippincamaro
sp with my 2001 ls1 with a inline pump and fpr should i put a vacume line on the nipple. or leave it the way it is and have 58psi all the time? thanks kenny
Mike
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From: Shreveport, LA
Originally Posted by slow
unless you have changed you IFR table the ls1 looks for a 58 psi rail pressure at all times.
However, most people don't install regulators on these motors without FI or big n20 shots.
Ryan
However, most people don't install regulators on these motors without FI or big n20 shots.
Ryan
Originally Posted by V6 Bird
But im trying to picture how you are using that vacuum port on the drivers side of the intake behind the TB to connect with the post....
I dont see another line basically that is on this hole in the intake you are talking about that I can tee into.
I dont see another line basically that is on this hole in the intake you are talking about that I can tee into.
I know what you mean about getting it setup for a dry kit. I ran a dry kit on the v6, with the stock fpr setup that was on it. (all the way up to a 150 shot)
thanks for the help but i am confused about the yes i had kinda two ?s so i confused myself. so i should leave it at 58psi all the time no vacume to it since it is na and no nitrous. thanks
Originally Posted by John_D.
You could use either side. The pcv or the vent. The pcv might be easier. Either one, you'll have to cut the line and splice into it. I replaced my pcv side with all rubber hose. The vent side is hard nylon, so it would probably be more difficult to tie into than the pcv side.
I know what you mean about getting it setup for a dry kit. I ran a dry kit on the v6, with the stock fpr setup that was on it. (all the way up to a 150 shot)
I know what you mean about getting it setup for a dry kit. I ran a dry kit on the v6, with the stock fpr setup that was on it. (all the way up to a 150 shot)
Mike
