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LS1 Injectors

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Old Mar 10, 2003 | 05:23 PM
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Default LS1 Injectors

I found this on a website....are these correct??
</font><blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr /><font size="2" face="Verdana, Helvetica, sans-serif">LS1 Stock Injector Sizes By Year

1998 28.6 lb/hr
1999-2000 26.4 lb/hr
2001-2002 28.8 lb/hr
</font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">TIA
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Old Mar 10, 2003 | 05:43 PM
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Default Re: LS1 Injectors

Yep those look right. Sucks having a 2000 for injectors!
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Old Mar 10, 2003 | 06:40 PM
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Default Re: LS1 Injectors

Is it a big deal to change them?

Expensive?

What else would you have to change/alter when changing them out?
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Old Mar 12, 2003 | 01:51 PM
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Default Re: LS1 Injectors

stock injectors are about $100 EACH <img border="0" title="" alt="[Eek!]" src="gr_eek2.gif" />

Not hard to change.

But you will need a computer reprogram, or you can "trick" the computer, and get it ok with a MAF-t

Aftermarket injectors are a lot less, like $250-300 a set. If upgrading, thats what i would do.

Ryan.
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Old Mar 13, 2003 | 04:10 PM
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Default Re: LS1 Injectors

I currently have stock injectors. Should I upgrade considering the mods I have ,and to what the 28.8# or SVO 30#? What would you recommend and why?

Thanks,
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Old Jan 17, 2011 | 09:13 AM
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Default injectors

I have another question:
Can I use 4.8L injectors and ecu on my stock 99 LS1 engine?
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Old Jan 17, 2011 | 12:09 PM
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First. You need to know what Duty Cycle your injectors are at currently. If they are above 80%, I recommend changing them.

2nd. If you are going to change them, I recommend changing to a 36# if you are sticking naturally aspirated or 42# if you are going boosted @ 43.5psi rated injector. That gives you some breathing room and they are easy to tune.

3rd. Please don't screw around with this MAF-t thing. Just get the car re-tuned properly with the right Injector flow rate values.

DO NOT install & DRIVE the car with the new INJECTORS until it HAS been TUNED.
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Old Jan 17, 2011 | 12:53 PM
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Originally Posted by ZL1Killa
First. You need to know what Duty Cycle your injectors are at currently. If they are above 80%, I recommend changing them.
My currently duty cycle is 85% !
Can I reduce it by cleaning the injector or I must change it?
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Old Jan 17, 2011 | 06:37 PM
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Originally Posted by kingdata
My currently duty cycle is 85% !
Can I reduce it by cleaning the injector or I must change it?
please god no.




I hope everyone, and you realize that FUEL is a dissolves things naturally. All this hocus pocus about fuel injector cleaner and crap...jeesh.

have you ever had the intake off of a car and noticed that where the injectors spray it is clean?

I recommend some 36# or 37# racetronix - Delphi/Lucas injectors rated at 43.5psi or even some 42# injectors (same as above) and you will be set
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Old Feb 10, 2011 | 04:29 PM
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I have an 2000, when I bought it, it came with RC 30lb injectors. I traded those for my friends 02(28.8lb)injectors. I did the swap 3 years ago. Am I leaving something on the table?
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