LS1TECH - Camaro and Firebird Forum Discussion

PCM Diagnostics & Tuning HP Tuners | Holley | Diablo

Setting Injector Size

Thread Tools
 
Search this Thread
 
Old Mar 30, 2008 | 12:25 PM
Share
  #1  
vandal0-0's Avatar
vandal0-0
Thread Starter
Launching!
iTrader: (3)
 
Joined: Feb 2004
Posts: 272
Likes: 0
From: Hawaii
Default Setting Injector Size
Was wondering what you guys are programming In your computer.If injectors are rated at 43.5psi and are base pressure is 58psi that makes the injectors bigger.Like a 60lb injector would be close to a 70lb injector,are you guys telling the computer its a 60 or 70.


Thanks
Brad
Reply
0
Old Mar 30, 2008 | 09:24 PM
Share
  #2  
onfire's Avatar
onfire
Coal Mining Director
iTrader: (17)
 
Joined: Nov 2001
Posts: 4,442
Likes: 0
From: Virginia
Default
Use the actual flow based on your fuel pressure. So a 60lb at 43.5 psi would be a 69.28 at 58psi. Use the 69.28 if you are running 58psi and set the IFR based on the flow rate spreadsheet.
Reply
0
Old Mar 30, 2008 | 09:41 PM
Share
  #3  
vandal0-0's Avatar
vandal0-0
Thread Starter
Launching!
iTrader: (3)
 
Joined: Feb 2004
Posts: 272
Likes: 0
From: Hawaii
Default
Originally Posted by onfire
Use the actual flow based on your fuel pressure. So a 60lb at 43.5 psi would be a 69.28 at 58psi. Use the 69.28 if you are running 58psi and set the IFR based on the flow rate spreadsheet.
The last time I was at the dyno the tuner asked what size injectors I had and just but 60lb injectors in the tune.I dont know anything about tuneing that is why I ask.So is what you are saying is to punch 69.28 in the apropriate box in the tuneing software.Does this affect the a/f alot if it is wrong.


Thanks
Brad
Reply
0
Old Mar 30, 2008 | 09:56 PM
Share
  #4  
DaveX's Avatar
DaveX
TECH Fanatic
 
Joined: Feb 2004
Posts: 1,259
Likes: 0
From: Lexington, KY
Default
You have to scale the injector flow rate table. It's not as simple as just telling the software what size injectors you have. There is a spreadsheet floating around that you plug your info into and it calculates the ifr numbers for you to use in the software.
Reply
0
Old Mar 30, 2008 | 10:09 PM
Share
  #5  
vandal0-0's Avatar
vandal0-0
Thread Starter
Launching!
iTrader: (3)
 
Joined: Feb 2004
Posts: 272
Likes: 0
From: Hawaii
Default
The tuner uses LS1 Edit is it the same concept with this as it is with HP Tuners and EFI Live.Or is LS1 Edit not good to use.This is on a turbo car also if it matters.


Thanks For All The Help
Brad
Reply
0
Back to Subforum
PCM Diagnostics & Tuning
View Next Unread
Am I running Open Loop?




Advanced Search

All times are GMT -5. The time now is 11:09 AM.

story-0
10 Reasons Daily Driving a Swap Project SUCKS! (& 1 Reason to Do It Anyway)

Slideshow: 10 reasons daily-driving a swap project might not be for you. Or is it?

By Michael S. Palmer | 2026-06-17 09:39:05


VIEW MORE
story-1
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-2
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 | 2026-06-18 10:26:23


VIEW MORE
story-3
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-4
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-5
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-6
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-7
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-8
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-9
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