Aeromotive FPR
Aeromotive FPR
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From: Kansas Now/Louisiana/Connecticut
your getting ahead of yourself man, whats up with the turbo and why do you think you need this? we need more details before we give opinions
I'm guessing (just a hunch) your fmu is broke, so you are considering going with a rising rate fpr, right? In that case, wouldn't a 1.7:1 fpr work best, like in rpw's case?
I'm guessing (just a hunch) your fmu is broke, so you are considering going with a rising rate fpr, right? In that case, wouldn't a 1.7:1 fpr work best, like in rpw's case?
My fmu is fine and im running amazing. im just waiting for my tires to come in so i can track it. its alittle too hot though, im just throwing this fmu out there as a replacement or because alot of pple dont like using vortechs fmu.
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ok dude, i hate so say this, but you need to read more. this is NOT an fmu, its a rr fpr.
furthermore, vortech's fmu is "specialized" for rrm's turbo setup as they make a special disc for it to provide the right pressure. if you mess with the fuel system without tuning and injectors, you most likely will blow up.
furthermore, vortech's fmu is "specialized" for rrm's turbo setup as they make a special disc for it to provide the right pressure. if you mess with the fuel system without tuning and injectors, you most likely will blow up.
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Good question. I can't say off the top of my head, but I reckon there is a sticky at the top of the FI forum with fuel requirement stuff that lists what each one is and does.
This is an EXCELLENT buy.... I recommend it to anyone. I dont like FMUs, I much prefer the reliability of this unit with some bigger injectors. With my Aeromotive, 460cc injectors and Wally fuel pump I had ZERO fuel related issues.
Originally Posted by Melaz425
Whats the difference between a fuel pressure regulator and a fuel managment unit?
(-Rhyzin)
FMU == Fuel Management Unit
this is a turbo specific part. it's "boost sensitive." the FMU senses boost by "T-ing" into a vacuum line between the intake manifold and fuel pressure regulator. when the FMU senses boost in the intake manifold, its pinches the fuel return line to build pressure in the fuel rail/system and therefore forcing more fuel delivery through the injectors. some of these units are adjustable through different means and deliver fuel proportionate to boost pressure. say for instance a FMU has a 12:1 setting. this means that it will raise fuel pressure 12 psi for every 1 psi of boost it senses. furthermore, if you were boosting 7 psi, this would mean that the FMU has raised fuel pressure 84 psi. thats around a potential 122psi at the fuel rail while at 7psi.
FPR == Fuel Pressure Regulator
in stock form it is not boost sensitive. lancers run a stock idle fuel pressure of 38psi and it rises, according to vacuum, to maybe around 47psi. might be a bit more as i haven't had a stock fpr in a long time. the fpr is attached to the manifold through a vacuum hose. sensing through the vacuum hose, the fpr has a diaphram that regulates fuel delivery according to vacuum. it accomplishes this in the same way as the FMU, except a FPR is "vacuum sensitive."
Btw, you have pics of your turbo installed yet? and on your mods list, it says "internal", it suppose to be "external"
Last edited by AznFlip; Aug 12, 2005 at 11:38 PM.
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you also forgot:
I prefer a solid RR fpr over fmu, as I've expressed many times. But as I've said, you would need bigger injectors and some way to control timing and fuel trims.
Adjustable Fuel Pressure Regulator
STATIC - a static adjustable FPR can have it's idle pressure adjusted higher or lower. the proportion at which fuel delivery increases over vacuum is the same as a stock fpr. say a stock fpr has idle fuel pressure at 38 psi and has peak fuel pressure(at peak torque? discussable) at 47 psi. the difference is 9 psi. so say you have an adjustable FPR and set it's idle fuel pressure to 44 psi. this would mean it's peak fuel pressure will be 53 psi.
RISING RATE - a rising rate FPR works the same as a static adjustable FPR except that the proportion of fuel delivered under vacuum has increased. if a rising rate adjustable FPR has a rate of 1.7:1, it will deliver 1.7 psi fuel for every 1 psi of vacuum. so say you set a rising rate fpr to an idle fuel pressure of 38 psi (as in the last example). this would mean it's peak fuel pressure would be 53.3 psi([1.7*9] + 38 = 53.3) instead of 47 psi. these units also claim that they react faster than stock FPR's.
RISING RATE & BOOST SENSITIVE - some adjustable FPR's are both rising rate and boost sensitive. it will deliver fuel under vacuum at 1.7:1, but under boost will deliver 1 psi fuel for every 1 psi of boost(1:1). some units can also adjust the fuel delivery ratio higher. if using this for the purpose of upgrading your ride with a turbo, you will also need injectors as a 1:1 rate under boost will probably not be adequate fuel for the added amount of air. a type of fuel control will also be needed.
STATIC - a static adjustable FPR can have it's idle pressure adjusted higher or lower. the proportion at which fuel delivery increases over vacuum is the same as a stock fpr. say a stock fpr has idle fuel pressure at 38 psi and has peak fuel pressure(at peak torque? discussable) at 47 psi. the difference is 9 psi. so say you have an adjustable FPR and set it's idle fuel pressure to 44 psi. this would mean it's peak fuel pressure will be 53 psi.
RISING RATE - a rising rate FPR works the same as a static adjustable FPR except that the proportion of fuel delivered under vacuum has increased. if a rising rate adjustable FPR has a rate of 1.7:1, it will deliver 1.7 psi fuel for every 1 psi of vacuum. so say you set a rising rate fpr to an idle fuel pressure of 38 psi (as in the last example). this would mean it's peak fuel pressure would be 53.3 psi([1.7*9] + 38 = 53.3) instead of 47 psi. these units also claim that they react faster than stock FPR's.
RISING RATE & BOOST SENSITIVE - some adjustable FPR's are both rising rate and boost sensitive. it will deliver fuel under vacuum at 1.7:1, but under boost will deliver 1 psi fuel for every 1 psi of boost(1:1). some units can also adjust the fuel delivery ratio higher. if using this for the purpose of upgrading your ride with a turbo, you will also need injectors as a 1:1 rate under boost will probably not be adequate fuel for the added amount of air. a type of fuel control will also be needed.
Originally Posted by omarboy25
i am running the aeromotive FPR with my set up
had the vortech one with RRM setup
nice setup Airquez
had the vortech one with RRM setup
nice setup Airquez
.. it was supposed to be a beast like yours, but it died in its infancy. Hopefully resurrection will be as sweet.