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1987 - 1996 F150 & Larger F-Series Trucks 1987 - 1996 Ford F-150, F-250, F-350 and larger pickups - including the 1997 heavy-duty F250/F350+ trucks

Adjustable fuel pressure regulator

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Old Oct 9, 2019 | 10:46 AM
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Adjustable fuel pressure regulator

Does anyone know of an adjustable fuel pressure regulator for a 1996 4.9?
 
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Old Oct 9, 2019 | 06:26 PM
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yours got problems? what is fuel pressure at idle? should be 50 psi or higher at idle
 
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Old Oct 9, 2019 | 06:29 PM
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Originally Posted by torq'ta 5 8
yours got problems? what is fuel pressure at idle? should be 50 psi or higher at idle
Well my motor is far from stock so I have bigger injectors in it after porting and polishing the head. I'd like to be able to adjust the fuel pressure because of all of my mods.
 
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Old Oct 9, 2019 | 06:48 PM
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if you new how many bolts hold it on, I got mine from LMR, mine is 2 bolt(93-95 lightning 5.8L)
if 3 bolt then get (87-93 mustang 5.0L) both are adjustable up to 100psi

my 5.8L had 2 bolts



this is 3 bolt 87-93 mustang 5.0L
 
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Old Oct 13, 2019 | 10:42 AM
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Originally Posted by torq'ta 5 8
if you new how many bolts hold it on, I got mine from LMR, mine is 2 bolt(93-95 lightning 5.8L)
A '96 would be the later 2-bolt FPR, so he would want this one ^^^. Mind you, I agree, there's not much reason to get an AFPR for a stock setup. More fuel will NOT yield more power.
 
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Old Oct 13, 2019 | 10:44 AM
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My motor isn't stock. I'm not trying to push more fuel in I'd like to tune it back a little because I already have bigger injectors. I'd like to keep it from dumping too much fuel.

Originally Posted by DPDISXR4Ti
A '96 would be the later 2-bolt FPR, so he would want this one ^^^. Mind you, I agree, there's not much reason to get an AFPR for a stock setup. More fuel will NOT yield more power.
 
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Old Oct 13, 2019 | 10:51 AM
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Originally Posted by Armyrules2
My motor isn't stock. I'm not trying to push more fuel in I'd like to tune it back a little because I already have bigger injectors. I'd like to keep it from dumping too much fuel.
I almost mentioned that as a possible reason to get an AFPR. What size injector are you running? I've often wondered how common the vapor lock issue is with this engine, which is why Ford went with the unusually low volume/high pressure configuration.
 
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Old Oct 13, 2019 | 10:53 AM
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I'm running accel 15 lb injectors. My truck runs pretty good with all the work I've done but it's running a little rich. So I'd like to dial it back a little

Originally Posted by DPDISXR4Ti
I almost mentioned that as a possible reason to get an AFPR. What size injector are you running? I've often wondered how common the vapor lock issue is with this engine, which is why Ford went with the unusually low volume/high pressure configuration.
 
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