Injector flow question
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From: Commerce Twp, MI
Injector flow question A friend of mine has a '99 with the smaller injectors. He recently bought some lightly used 28# injectors (off of an '01 or '02 I think). Can I just copy my injector flow table from my '02 and paste it into his tune so his car can accept the larger injectors? Are there any other tables that need to be adjusted?
"Offset vs Volts vs KPA"
I just checked my stock 99 file vs. stock 98 and that table is different. And the stock Z06 02' is different as well. Both the 98 and 02 have 28lb.
To date I've only changed the injector flow table for my 42lb SVO's, and didn't touch the Offset vs Volts vs KPA table.
Do I need to?
I just checked my stock 99 file vs. stock 98 and that table is different. And the stock Z06 02' is different as well. Both the 98 and 02 have 28lb.
To date I've only changed the injector flow table for my 42lb SVO's, and didn't touch the Offset vs Volts vs KPA table.
Do I need to?
The 98 and 01,02 injectors are not exactly the same even though the IFR tables seem to be. 98s are supposedly 28.6#/hr and 01,02s are supposedly 28.8#/hr. They have different GM part #s also. LS6 injectors look to be somewhere around 29.3#/hr but I've never heard for sure. The Offset vs Volts vs KPA tables should be different with different size injectors.
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From: Leg Dist #31, WA
Originally Posted by 2xLS1
The 98 and 01,02 injectors are not exactly the same even though the IFR tables seem to be. 98s are supposedly 28.6#/hr and 01,02s are supposedly 28.8#/hr. They have different GM part #s also. LS6 injectors look to be somewhere around 29.3#/hr but I've never heard for sure. The Offset vs Volts vs KPA tables should be different with different size injectors.
Thanks-
Look at the Offset vs Volts vs KPA on a 99 (26.8) and a 02 (28.8) and you will see it is not a linear difference. Some values are higher and some are lower when comparing the 2 tables. I don't think you can say you just multiply the table by a straight percentage. If you are talking about the IFR table, then yes, you just multiply by a straight percentage.
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TECH Apprentice
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From: Leg Dist #31, WA
Originally Posted by 2xLS1
Look at the Offset vs Volts vs KPA on a 99 (26.8) and a 02 (28.8) and you will see it is not a linear difference. Some values are higher and some are lower when comparing the 2 tables. I don't think you can say you just multiply the table by a straight percentage. If you are talking about the IFR table, then yes, you just multiply by a straight percentage.
Thanks again-
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Verdad Gallardo New injector size/Old injector size = the multiplyer you use if the injectors have the same Bar (psi) rating. Size of the engine has nothing to do with it. Or just use the attached file.
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From: Leg Dist #31, WA
Originally Posted by 2xLS1
New injector size/Old injector size = the multiplyer you use if the injectors have the same Bar (psi) rating. Size of the engine has nothing to do with it. Or just use the attached file.
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From: Leg Dist #31, WA
Originally Posted by 2xLS1
I get around 41.8/4 bar using the excel file.
how about just using the injector spreadsheet in the stickies of the PCM section, to calculate the table for the new injectors, not just modify the old values (which assumes that all injectors scale the same)?
I was just giving the math behind the injector flow rates, and why it is not linear like the above posted though.
The spreadsheet is very nice
I keep a copy of it in my tuning tools folder.
Ryan
The spreadsheet is very nice
I keep a copy of it in my tuning tools folder. Ryan
