Will disconnecting the vaccum line to the FPR yeild power?
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Will disconnecting the vaccum line to the FPR yeild power?
Has anyone tried this, I seen it on a site for free mods, but I forgot the address.
If it works, could someone explain to me exactly how it works?
If it works, could someone explain to me exactly how it works?
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Re: Will disconnecting the vaccum line to the FPR yeild power? (redman223)
My fried just told me that he tried it before and it made his gas mileage HORRIBLE, but I forgot to ask him about power? How would it make more power?
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Re: Will disconnecting the vaccum line to the FPR yeild power? (redman223)
My fried just told me that he tried it before and it made his gas mileage HORRIBLE, but I forgot to ask him about power? How would it make more power?
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Re: Will disconnecting the vaccum line to the FPR yeild power? (Lilmumbler)
I think we're talking about a different hose here...the secondaries stay open when the vaccum hose on the manifold is removed. But I'm talking about the vaccum hose on the FPR, I have seen on other boards that people have done this and gotten HORRIBLE gas mileage, and I was just wondering if they were wasting gas, or actually making power.
It wouldn't be done all the time, I just want to know if it will give me a better time at the track or if I should even waste my time.
It wouldn't be done all the time, I just want to know if it will give me a better time at the track or if I should even waste my time.
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Re: Will disconnecting the vaccum line to the FPR yeild power? (GSR-OwnzJo0)
All it does is increase fuel pressure. If you are running rich with it disconnected, you are going slower. You will go the fastest when you are on the borderline of detonation.
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Re: Will disconnecting the vaccum line to the FPR yeild power? (dubster99)
yea, the vaccum line tells the comp how much o2 the engine has, so disconnecting it will make the engine think it doesn't have enough o2, and it'll increase fuel flow to try to compensate for the o2. the engine will idle much higher, and im assuming not much more than that. i wouldnt recomend doing it.
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Re: Will disconnecting the vaccum line to the FPR yeild power? (redman223)
yeah i saw that on the website too. its this page that shows you how to tweak the motor for extra free horses. i need to know if this works or not too. i dont know how it can destroy your mileage but can anymore ppl clearify on this?
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Re: Will disconnecting the vaccum line to the FPR yeild power? (rota426)
Whoa settle down with the guessing!
The FPR is designed to vary fuel pressure by vacuum, while at idle the vaccum will cause a diaphram inside the regulator to rise against a spring reducing the pressure delivered to the fuel rail. As the throttle is opened there is less vaccum which allows the spring to move the diaphram down increasing the fuel pressure. This way you get the required fuel pressure under load, but can run a lower fuel pressure at idle.
Removing the vacuum line from the FPR will result in running at ~40psi at all times.
This will result in higher gas mileage, poorer idle, and no power gains.
Leave the vacuum line on there or get an adjustable FPR.
The FPR is designed to vary fuel pressure by vacuum, while at idle the vaccum will cause a diaphram inside the regulator to rise against a spring reducing the pressure delivered to the fuel rail. As the throttle is opened there is less vaccum which allows the spring to move the diaphram down increasing the fuel pressure. This way you get the required fuel pressure under load, but can run a lower fuel pressure at idle.
Removing the vacuum line from the FPR will result in running at ~40psi at all times.
This will result in higher gas mileage, poorer idle, and no power gains.
Leave the vacuum line on there or get an adjustable FPR.
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