Fueling & Injection Fuel Pumps | Injectors | Rails | Regulators | Tanks

Fuel Regulators

Thread Tools
 
Search this Thread
 
Old Apr 2, 2009 | 09:55 AM
  #1  
red98ls1's Avatar
Thread Starter
Staging Lane
iTrader: (2)
 
Joined: Nov 2001
Posts: 91
Likes: 0
From: DFW
Default Fuel Regulators

Hey guys,

What are the differences, pros/cons of running the fuel regulators before or after the rails?

Some say it is good to run before as your fuel lines will always stay full. Running it after, well, kind of the same thing.

So, what do you guys think?
Reply
Old Apr 2, 2009 | 11:17 AM
  #2  
chevyz2801's Avatar
12 Second Club
iTrader: (20)
 
Joined: Nov 2006
Posts: 185
Likes: 0
From: Richmond VA
Default

After the rails keeps the most fuel at the injectors, and will limit the psi drop when you get on the throttle. If you run it before then when you get on the throttle the the psi can drop at the injectors. You want the most fuel you can get to the injectors and send back what you dont need with the reg after the rails with the return.
Reply
Old Apr 2, 2009 | 11:27 AM
  #3  
salemetro's Avatar
TECH Fanatic
iTrader: (5)
 
Joined: Sep 2008
Posts: 1,120
Likes: 0
From: Salem/Keizer
Default

Originally Posted by red98ls1
Hey guys,

What are the differences, pros/cons of running the fuel regulators before or after the rails?

Some say it is good to run before as your fuel lines will always stay full. Running it after, well, kind of the same thing.

So, what do you guys think?
Run it after the rail. IMHO it would make sense that running it after the rail would account more accurately for injector usage, since it would be referencing the fuel pressure at the end of the rail (after the injectors have taken what they need) as opposed to before.

Someone correct me if I'm wrong here?
Reply
Old Apr 2, 2009 | 11:36 AM
  #4  
red98ls1's Avatar
Thread Starter
Staging Lane
iTrader: (2)
 
Joined: Nov 2001
Posts: 91
Likes: 0
From: DFW
Default

Yep...I am agreeing with you guys. Since I have been rethinking my fuel system, I have heard some crazy things.
Reply
Old Apr 3, 2009 | 01:37 PM
  #5  
71-Camaro-98's Avatar
TECH Resident
iTrader: (17)
 
Joined: Sep 2006
Posts: 838
Likes: 0
From: AZ
Default

Does anyone have any pics they could post up so I could get a visual of where to mount one? And what do you guys think is a good FPR for a good price?
Reply
Old Apr 5, 2009 | 11:10 PM
  #6  
71-Camaro-98's Avatar
TECH Resident
iTrader: (17)
 
Joined: Sep 2006
Posts: 838
Likes: 0
From: AZ
Default

Pics would help out. Thanks.
Reply
Old Apr 6, 2009 | 01:19 AM
  #7  
pmbmax's Avatar
8 Second Club
 
Joined: May 2004
Posts: 371
Likes: 0
From: Savannah, TN
Default

Always run after and feed in the back and out the front, IMHO
Reply




All times are GMT -5. The time now is 10:56 PM.

story-0
6 Gifts Neither Your Dad Nor Grad Will Shove Into the 'Trinket Drawer'

Don't get dad new socks or a grill brush this year.

By Brett Foote | 2026-06-09 14:55:56


VIEW MORE
story-1
Topdon ONE vs. Artidiag 800 BT2: Which is the Diagnostic Tablet For You?

Slideshow: We take a close look at the ONE and Artidiag 800BT2 diagnostic tools from Topdon and the reasons to buy one over the other.

By Pouria Savadkouei | 2026-05-28 11:05:11


VIEW MORE
story-2
Gas Monkey Built a 6-Wheel Ferrari Testarossa With a Corvette LT4 Engine

Slideshow: The controversial Ferrari F6 swaps its original flat-12 for a Corvette Z06-derived LT4 V8 and sends power to four rear wheels through a custom-built drivetrain.

By Verdad Gallardo | 2026-05-26 18:23:54


VIEW MORE
story-3
7 Most Reliable High-Performance Engines GM Has Ever Built

Slideshow:These GM engines didn't just make huge power, they survived abuse, boost, track days, and six-digit mileage with a reputation for refusing to quit.

By Verdad Gallardo | 2026-05-21 16:45:27


VIEW MORE
story-4
Amazing '71 Camaro Restomod Is Modern Muscle Car Under the Skin

Slideshow: This heavily modified 1971 Camaro mixes classic muscle car styling with a fifth-generation Camaro interior and modern LS3 power.

By Verdad Gallardo | 2026-05-12 18:06:42


VIEW MORE
story-5
6 Common C5 Corvette Failures and What's Involved In Repairing Them

Slideshow: From wobbling harmonic balancers to failed EBCMs, these are the issues that define long-term C5 ownership and what repairs typically involve.

By Pouria Savadkouei | 2026-05-07 18:44:57


VIEW MORE
story-6
Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph

Slideshow: A modern Camaro transformed into a retro icon, this limited-run "Bandit" build blends nostalgia with brute force in a way few revivals manage.

By Verdad Gallardo | 2026-04-21 13:57:02


VIEW MORE
story-7
Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked

Slideshow: Cadillac didn't just crash the high-performance luxury vehicle party, it showed up loud, supercharged, and occasionally a little unhinged...

By Pouria Savadkouei | 2026-04-16 10:05:15


VIEW MORE
story-8
Top 10 Most Powerful Chevy Trucks Ever Made!

Slideshow: Top ten most powerful Chevy trucks ever made

By | 2026-03-25 09:22:26


VIEW MORE
story-9
Hennessey's New Supercharged Silverado ZR2 Has 700 HP

Slideshow: Hennessey has turned the Silverado ZR2 into a 700-hp off-road monster with supercharged V8 power and a limited production run.

By Verdad Gallardo | 2026-03-24 18:57:52


VIEW MORE