Fuel system help
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Joined: Aug 2014
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Fuel system help
Bare with me through this.
This is for a 2001 z06
I currently have a cam only ls6 that I added a A&A v3-ti to. During this build, I ended up with a custom sheet metal intake off a friends car for cheap. With this intake is includes rails.
I'm adding a UPP fuel system and I want to keep the factory returnless fuel system.
My question now is, would I need to run 2 fuel pressure regulators(1 for UPP/ one for factory feed) Since the factory one off the rails is eliminated?
Or would it be better off to build a return style since I'm already in it? Regardless I'd need 2 regulators?
This is for a 2001 z06
I currently have a cam only ls6 that I added a A&A v3-ti to. During this build, I ended up with a custom sheet metal intake off a friends car for cheap. With this intake is includes rails.
I'm adding a UPP fuel system and I want to keep the factory returnless fuel system.
My question now is, would I need to run 2 fuel pressure regulators(1 for UPP/ one for factory feed) Since the factory one off the rails is eliminated?
Or would it be better off to build a return style since I'm already in it? Regardless I'd need 2 regulators?
Last edited by Jkhays; Feb 3, 2017 at 09:51 AM.
Pro
Joined: Nov 2009
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From: ohio
My car has a fuel pressure regulator (return style)back by the fuel tank, and has the stock return less regulator on the fuel rail still.
It already had the fuel system so wether it's right or wrong idk, but I do know it works.
It already had the fuel system so wether it's right or wrong idk, but I do know it works.
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2020 Corvette of the Year Finalist (performance mods)
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99 and up cars don't have a regulator on the rails, I believe that piece that looks like a regulator is actually there to dampen the injector pulse... on an 01 your regulator should be built into the fuel filter
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So I should be just fine feeding the rails from the factory line?
Melting Slicks
Joined: Jul 2014
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From: Virginia
I would run it return style either way as it is fairly easy and it gives you more headroom.
Last edited by Turpid porpoise; Feb 3, 2017 at 01:54 PM.
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you can feed aftermarket rails from the factory line you just need an adapter to convert that line so that you can use -an hose ends... it will work but I agree with the post above, a boost referenced return style setup would be the way to go when you decide to build the system
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Joined: Jan 2011
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From: Colorado Springs CO
Let me chime in here for a minute.
If you want to keep the factory system factory as it was originally designed, you don't need an additional reg. There is actually already one in the rear that returns the fuel to the tank and it is pre-regulated by the time it reaches the rail. Our system has a check valve to keep the factory system from accessing the regulator/return. They are then only available for our system when it's active. If you're wanting to make a full return system (and have the ability to boost reference the regulator) then you have to remove the factory regulator in the rear, and remove the check valve from our system. This will allow the factory system to access our reg and be regulated by it.
Hope this helps...
CK
If you want to keep the factory system factory as it was originally designed, you don't need an additional reg. There is actually already one in the rear that returns the fuel to the tank and it is pre-regulated by the time it reaches the rail. Our system has a check valve to keep the factory system from accessing the regulator/return. They are then only available for our system when it's active. If you're wanting to make a full return system (and have the ability to boost reference the regulator) then you have to remove the factory regulator in the rear, and remove the check valve from our system. This will allow the factory system to access our reg and be regulated by it.
Hope this helps...
CK
