What in PCM do I need to change for 30lb injectors
10-07-2002, 11:51 PM
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What in PCM do I need to change for 30lb injectors Right now I am running whatever comes stock for a 2000 WS6... just got some 30lb SVOs I want to put in. Anyone have a setup I can copy by chance or point me in right direction?
10-08-2002, 08:34 AM
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Re: What in PCM do I need to change for 30lb injectors find the difference in the stk inj 28.6 @ 58 psi I believe and the svo's 30lb @ 39psi should be about 36-38 lb/hr with 58psi, divide that number by your stk inj size and that will give you the %amount that you will need to trim your inj flow rate table. you should be able to get very close the first time and be near where you are currently with your LTFT's. Then if you are off a few % then dink with the MAF table.
Jeremy
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10-08-2002, 09:02 AM
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Re: What in PCM do I need to change for 30lb injectors Jeremy,
For those of us who are mathematically challenged could you give us a hypothetical example formula?
Thanks,
Greg
For those of us who are mathematically challenged could you give us a hypothetical example formula?
Thanks,
Greg
10-10-2002, 03:10 PM
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Re: What in PCM do I need to change for 30lb injectors </font><blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr /><font size="2" face="Verdana, Helvetica, sans-serif">Originally posted by Doc99SSx:
<strong>First of all, 30#/hr SVO injectors in an LS1 fuel system will flow 36.6#/hr.
Are you sure that you need a 36.6#/hr fuel injector????
Second, if you install the 30#/hr SVO injectors, I think that the proper thing to do in LS1Edit is to multipy the fuel injector flow table thru by 1.38 (36.6/26.5). I believe that the stock 1999 and 2000 LS1 injectors flow 26.5#/hr.</strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">Actually shouldnt you devide injector flow by 1.38 to bring it back down to the same flowrate?
<strong>First of all, 30#/hr SVO injectors in an LS1 fuel system will flow 36.6#/hr.
Are you sure that you need a 36.6#/hr fuel injector????
Second, if you install the 30#/hr SVO injectors, I think that the proper thing to do in LS1Edit is to multipy the fuel injector flow table thru by 1.38 (36.6/26.5). I believe that the stock 1999 and 2000 LS1 injectors flow 26.5#/hr.</strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">Actually shouldnt you devide injector flow by 1.38 to bring it back down to the same flowrate?
10-10-2002, 04:13 PM
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Re: What in PCM do I need to change for 30lb injectors <img src="http://holdenls1.com/Temp/Injectorflow.jpg" alt=" - " />
<img src="http://holdenls1.com/Temp/Injectorflow1.jpg" alt=" - " />
<img src="http://holdenls1.com/Temp/Injectorflow2.jpg" alt=" - " />
<small>[ October 10, 2002, 04:35 PM: Message edited by: SIKLS1 ]</small>
<img src="http://holdenls1.com/Temp/Injectorflow1.jpg" alt=" - " />
<img src="http://holdenls1.com/Temp/Injectorflow2.jpg" alt=" - " />
<small>[ October 10, 2002, 04:35 PM: Message edited by: SIKLS1 ]</small>
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10-10-2002, 06:53 PM
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Re: What in PCM do I need to change for 30lb injectors The table is labeled fuel injector flow rate.
So I believe that you should multiple all values by 1.38. My table which is still in stock form (I have not changed fuel injector). The first value is 3.33 gm/sec which converts to about 26.5 #/hr. With 30#/hr SVO injectors I would make that first value 4.60 (=3.33*1.38).
The SVO injectors flow more fuel, not less.
So I believe that you should multiple all values by 1.38. My table which is still in stock form (I have not changed fuel injector). The first value is 3.33 gm/sec which converts to about 26.5 #/hr. With 30#/hr SVO injectors I would make that first value 4.60 (=3.33*1.38).
The SVO injectors flow more fuel, not less.
10-10-2002, 11:12 PM
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Re: What in PCM do I need to change for 30lb injectors </font><blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr /><font size="2" face="Verdana, Helvetica, sans-serif">Originally posted by SIKLS1:
<strong> <img src="http://holdenls1.com/Temp/Injectorflow.jpg" alt=" - " />
<img src="http://holdenls1.com/Temp/Injectorflow1.jpg" alt=" - " />
<img src="http://holdenls1.com/Temp/Injectorflow2.jpg" alt=" - " /></strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">You are the ****. That chart is the bomb!!!
Could you do that for my 38lb injectors????
Thanks Jason
<strong> <img src="http://holdenls1.com/Temp/Injectorflow.jpg" alt=" - " />
<img src="http://holdenls1.com/Temp/Injectorflow1.jpg" alt=" - " />
<img src="http://holdenls1.com/Temp/Injectorflow2.jpg" alt=" - " /></strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">You are the ****. That chart is the bomb!!!
Could you do that for my 38lb injectors????
Thanks Jason
10-11-2002, 12:28 AM
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Re: What in PCM do I need to change for 30lb injectors First of all, 30#/hr SVO injectors in an LS1 fuel system will flow 36.6#/hr.
Are you sure that you need a 36.6#/hr fuel injector????
Second, if you install the 30#/hr SVO injectors, I think that the proper thing to do in LS1Edit is to multipy the fuel injector flow table thru by 1.38 (36.6/26.5). I believe that the stock 1999 and 2000 LS1 injectors flow 26.5#/hr.
Are you sure that you need a 36.6#/hr fuel injector????
Second, if you install the 30#/hr SVO injectors, I think that the proper thing to do in LS1Edit is to multipy the fuel injector flow table thru by 1.38 (36.6/26.5). I believe that the stock 1999 and 2000 LS1 injectors flow 26.5#/hr.
