TBI Throttle Body Injection discussion and questions. L03/CFI tech and other performance enhancements.

Adjustable fuel pressure reg

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Old Feb 26, 2024 | 06:29 PM
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Adjustable fuel pressure reg

So I am putting an adjustable fpr on my 305 and I heard it should be at the end of the system but the return line isn’t pressurized. Can I just install a double feed to my tbi and not have a return on the tbi but have it running off of my fpr? Would this be ok
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Old Feb 29, 2024 | 11:04 AM
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Car: '90 RS
Engine: 377 LSX
Transmission: Magnum T56
Re: Adjustable fuel pressure reg

Any reason why you need an adjustable regulator on this set-up? I would not dead head the pump without a proper return.
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Old Mar 4, 2024 | 05:51 PM
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Re: Adjustable fuel pressure reg

Originally Posted by ShiftyCapone
Any reason why you need an adjustable regulator on this set-up? I would not dead head the pump without a proper return.

what do you mean dead head?
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Old Mar 5, 2024 | 07:34 AM
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Re: Adjustable fuel pressure reg

As long as you have some form of return line in your set-up you'll be fine. By dead head I mean nowhere for the excess fuel to go (return line), its just builds in the main line and makes the fuel pump work harder.
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Old Mar 7, 2024 | 01:01 AM
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Re: Adjustable fuel pressure reg

WHY do you need an aftermarket fuel pressure regulator? What's wrong with the one you already have, built-into the TBI unit?
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Old Mar 7, 2024 | 06:38 PM
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Re: Adjustable fuel pressure reg

Originally Posted by ShiftyCapone
As long as you have some form of return line in your set-up you'll be fine. By dead head I mean nowhere for the excess fuel to go (return line), its just builds in the main line and makes the fuel pump work harder.

yeah I have the stock return line on the back of tbi
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Old Mar 7, 2024 | 06:39 PM
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Re: Adjustable fuel pressure reg

Originally Posted by ShiftyCapone
As long as you have some form of return line in your set-up you'll be fine. By dead head I mean nowhere for the excess fuel to go (return line), its just builds in the main line and makes the fuel pump work harder.

also the stock one in the tbi
can I just remove it and put a block plate ??
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