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

Can injectors be to big?

Thread Tools
 
Search this Thread
 
Old Apr 2, 2008 | 11:29 PM
  #1  
Ryan33187's Avatar
Thread Starter
TECH Regular
15 Year Member
iTrader: (16)
 
Joined: Jan 2006
Posts: 460
Likes: 0
Default Can injectors be to big?

I bought 42lb injectors even though I do not need them yet, but would it be ok to put them on the car and get it tuned... I have full bolt-ons and a cam that is being installed soon alone with a stall so I figured put the injectors on and get it all tuned together...
Reply
Old Apr 2, 2008 | 11:32 PM
  #2  
Derek @ EDO's Avatar
FormerVendor
iTrader: (73)
 
Joined: Nov 2005
Posts: 4,072
Likes: 0
From: Baton Rouge, LA
Default

You will be just fine as long as its tuned.
Reply
Old Apr 2, 2008 | 11:34 PM
  #3  
Ryan33187's Avatar
Thread Starter
TECH Regular
15 Year Member
iTrader: (16)
 
Joined: Jan 2006
Posts: 460
Likes: 0
Default

Thank you much.
Reply
Old Apr 2, 2008 | 11:35 PM
  #4  
LT1-DAN's Avatar
TECH Enthusiast
 
Joined: Sep 2006
Posts: 708
Likes: 0
From: FLORIDA
Default

Yep, no problems at all, just find someone that knows how to tune.
Reply
Old Apr 2, 2008 | 11:36 PM
  #5  
Ryan33187's Avatar
Thread Starter
TECH Regular
15 Year Member
iTrader: (16)
 
Joined: Jan 2006
Posts: 460
Likes: 0
Default

I'm putting my trust in straightline it appears . Hear good things about them from alot of people.
Reply
Old Apr 2, 2008 | 11:43 PM
  #6  
2002_Z28_Six_Speed's Avatar
TECH Veteran
iTrader: (19)
 
Joined: Aug 2005
Posts: 4,538
Likes: 1
From: Wash, DC
Default

I remember some guys complaining about when you go to low impedance high flow injectors you will have alot of issues with small pulse adjust.

As long as the pulse width you need to idle isn't less than the min your injector can give... what's the problem?

I think if your car had to command .5 ms to idle and 1 ms was the least it could do then you would just be too rich at idle. It should still run.
Reply
Old Apr 2, 2008 | 11:49 PM
  #7  
Ryan33187's Avatar
Thread Starter
TECH Regular
15 Year Member
iTrader: (16)
 
Joined: Jan 2006
Posts: 460
Likes: 0
Default

The injectors I have coming are Fast 42lbs
Reply
Old Apr 3, 2008 | 02:43 AM
  #8  
Urban Legend's Avatar
TECH Cry Baby BOSS APPROVED!
iTrader: (5)
 
Joined: Jul 2005
Posts: 5,799
Likes: 2
Default

Just do it all at the same time including the tune.
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 Apr 3, 2008 | 08:36 AM
  #9  
Ryan K's Avatar
Pathological Modifier
iTrader: (11)
 
Joined: Jan 2002
Posts: 3,626
Likes: 1
Default

42Lb injectors will be fine, but to answer your question, yes injectors can be too big.

When you start running very large injectors (>60lb) the idle pulse width becomes very low and you start running into the minimum PW that actually flows any fuel. You start seeing poor atomization and potentially puddling. Which leads to erratic idle in most cases.

Ryan K.
Reply




All times are GMT -5. The time now is 02:03 PM.

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