Nitrous Oxide Installation | Tuning | Products
Sponsored by:
Sponsored by:

do I need a bigger fuel pump?

Thread Tools
 
Search this Thread
 
Old Nov 27, 2006 | 06:33 AM
  #1  
KrautBurner's Avatar
Thread Starter
11 Second Club
iTrader: (5)
 
Joined: Aug 2005
Posts: 1,301
Likes: 1
From: driving my 88 integra :(
Default do I need a bigger fuel pump?

I am going with a NXL kig (Nitrous Express Direct Port)
going to be running 80hp shot (maybe 120hp later)

while getting the nitrous installed,
I am also getting my long tubes, cam, and custom tuning done

should I be safe with the stock fuel pump?

what do you guys think about the Walbro 255 lph fuel pump for GTO


thanks in advance guys,


Russ
Reply
Old Nov 27, 2006 | 10:02 AM
  #2  
pdanrichey's Avatar
TECH Resident
iTrader: (4)
 
Joined: Nov 2004
Posts: 768
Likes: 1
From: Keller, TX
Default

I would say yes. I'm no where near an expert...but I reckon it would be a good idea.

Also, I think you'll need injectors before you need a fuel pump. In case you want to go more HP down the road, buy 42 or 60 lbs injectors and have the tuner tune them in verses waiting, then having to get a re-tune down the road.

With my current mods, my stock injectors are running at 79% at WOT around 5k RPMs. I've heard that ideally, you should keep them under 80%. I can't imagine that with your current/future setup, you'll be pushing those things to the limit if not beyond.
Reply
Old Nov 27, 2006 | 10:17 AM
  #3  
TNTramair's Avatar
11 Second Club
iTrader: (15)
 
Joined: Feb 2004
Posts: 2,743
Likes: 1
From: ne philly
Default

better safe than sorry. i would and did upgrade when the jug went on.
Reply
Old Nov 27, 2006 | 10:41 AM
  #4  
LS1RedZ's Avatar
12 Second Club
20 Year Member
iTrader: (19)
 
Joined: Mar 2005
Posts: 3,080
Likes: 1
From: Waco, TX
Default

Originally Posted by TNTramair
better safe than sorry. i would and did upgrade when the jug went on.
Reply
Old Dec 27, 2006 | 02:47 AM
  #5  
KrautBurner's Avatar
Thread Starter
11 Second Club
iTrader: (5)
 
Joined: Aug 2005
Posts: 1,301
Likes: 1
From: driving my 88 integra :(
Default

my roommate got me a Walboro 255lph for christmas,
he really wants me to up the jets on teh No2

now I need him to get me a new clutch (to handle the power)
Reply
Old Dec 27, 2006 | 03:46 AM
  #6  
hesham's Avatar
On The Tree
 
Joined: Oct 2006
Posts: 126
Likes: 0
From: ksa, jeddah
Default

this pump will do a great job
Reply
Old Dec 27, 2006 | 09:19 AM
  #7  
Nitro Dave's Nitrous Outlet's Avatar
FormerVendor
iTrader: (25)
 
Joined: Jun 2002
Posts: 12,283
Likes: 4
From: Waco, TX
Default

Upgradeing the pump is a good idea. The NXL kit will demand lots of fuel at one time. No need to upgrade injectors on a wet system......

With the size shot you are running you should be fine with your new fuel pump. However when you tune watch for a lean spike. If there is one you will need to get the fuel accumulater.
Dave
Reply
Old Dec 27, 2006 | 11:39 AM
  #8  
KrautBurner's Avatar
Thread Starter
11 Second Club
iTrader: (5)
 
Joined: Aug 2005
Posts: 1,301
Likes: 1
From: driving my 88 integra :(
Default

Originally Posted by Nitro Dave's Nitrous Outlet
However when you tune watch for a lean spike. If there is one you will need to get the fuel accumulater.
Dave

still?

even with only the 120hp shot?
Reply
LS1 Tech Stories

The Best V8 Stories One Small Block at Time

story-0

Amazing '71 Camaro Restomod Is Modern Muscle Car Under the Skin

 Verdad Gallardo
story-1

6 Common C5 Corvette Failures and What's Involved In Repairing Them

 Pouria Savadkouei
story-2

Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph

 Verdad Gallardo
story-3

Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked

 Pouria Savadkouei
story-4

Top 10 Most Powerful Chevy Trucks Ever Made!

 
story-5

Hennessey's New Supercharged Silverado ZR2 Has 700 HP

 Verdad Gallardo
story-6

Coachbuilt N2A Anteros Is an LS2-Powered C6 Corvette In Italian Clothes

 Verdad Gallardo
story-7

Awesome K5 Blazer Restomod Comes With C7 Corvette Power

 Verdad Gallardo
story-8

10 Camaros You Should Never Buy

 
story-9

10 LS Engine Myths That Refuse to Die

 Verdad Gallardo
Old Dec 27, 2006 | 11:56 AM
  #9  
Robert56's Avatar
TECH Senior Member
iTrader: (2)
 
Joined: Aug 2003
Posts: 9,557
Likes: 1
From: Tacoma, WA
Default

Originally Posted by KrautBurner
still?

even with only the 120hp shot?
Biggest rails out there, and they tend to be hard to keep full at high demand times.
Robert
Reply
Old Dec 27, 2006 | 12:03 PM
  #10  
Nitro Dave's Nitrous Outlet's Avatar
FormerVendor
iTrader: (25)
 
Joined: Jun 2002
Posts: 12,283
Likes: 4
From: Waco, TX
Default

Originally Posted by KrautBurner
still?

even with only the 120hp shot?
Correct. You are filling a large area at one time that is suppling the motor as well as directport. You are probley fine. But check just to be safe.
Dave
Reply
Old Dec 29, 2006 | 09:29 PM
  #11  
1999ssls1's Avatar
TECH Enthusiast
iTrader: (71)
 
Joined: Dec 2006
Posts: 737
Likes: 0
From: Chattanooga,TN
Default

Walboro 255lph all the way
Reply
Old Dec 29, 2006 | 09:40 PM
  #12  
CAT3's Avatar
Restricted User
iTrader: (9)
 
Joined: Sep 2002
Posts: 7,603
Likes: 0
From: Sierra Vista, AZ
Default

Ditto, no need for injectors for the NXL. I had one a long time ago and will say, its one of the cleanest looking installs. As for the lean on 120 I didnt notice it really, using a Walbro intank pump. However, on the 180 I did, and 220 I almost toasted the engine a couple times (I was hard headed about getting it down the track ). If you can later, mount a front mount regulator, larger feed line, and use stock feed as a return you will benefit greatly from this mod....it can be done for about $400 and a couple hours. GL

Charlie
Reply
Old Dec 30, 2006 | 12:11 AM
  #13  
KrautBurner's Avatar
Thread Starter
11 Second Club
iTrader: (5)
 
Joined: Aug 2005
Posts: 1,301
Likes: 1
From: driving my 88 integra :(
Default

looks like the "nxl" isnt going on the car,

too much fittment issues (with the ls2)

gonna sell it,
and get the nitro dave's LS2 Plate Wet Kit
just do the 100 pills.

and I found out,
the Walboro isn't a strait drop in on the GTO
I was told to get the LPE one
Reply




All times are GMT -5. The time now is 04:08 AM.

story-0
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-1
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-2
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-3
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-4
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-5
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
story-6
Coachbuilt N2A Anteros Is an LS2-Powered C6 Corvette In Italian Clothes

Slideshow: A one-off sports car that looks like a vintage Italian exotic-but hides a C6 Corvette underneath-just sold for the price of a new mid-engine Corvette.

By Verdad Gallardo | 2026-03-23 18:53:41


VIEW MORE
story-7
Awesome K5 Blazer Restomod Comes With C7 Corvette Power

Slideshow: A heavily reworked 1972 K5 Blazer swaps its off-road roots for a low-slung street-focused build with modern V8 power.

By Verdad Gallardo | 2026-03-09 18:08:45


VIEW MORE
story-8
10 Camaros You Should Never Buy

Slideshow: There are thousands of used Camaros on the market but we think you should avoid these 10

By | 2026-02-17 17:09:30


VIEW MORE
story-9
10 LS Engine Myths That Refuse to Die

Slideshows: Which one of these myths do you believe?

By Verdad Gallardo | 2026-01-28 18:10:11


VIEW MORE