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Fuel injector question

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Old Nov 23, 2004 | 11:14 AM
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Default Fuel injector question

Is it necessary to upgrade the stock injectors on my '99 to handle upper end mods? The mods are listed in my sig. I have not had any fuel related problems but I'm not sure if I need 30lb injectors or if the stock ones are suitable. Really if there is no extra HP gained from the mod I don't feel it to be worth it. The car recently dynoed at 400 RWHP with the 390's. Any opinions?

Last edited by Laguna Blu; Nov 23, 2004 at 12:05 PM.
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Old Nov 23, 2004 | 01:27 PM
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Anyone running aftermarket injectors?
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Old Nov 23, 2004 | 02:44 PM
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Do you have 26 or 28# injectors? If your tune achieved desired A/F ratios you are probably ok. With 26#ers you are probably in a high duty cycle area which is not the best. >90% is undesirable.
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Old Nov 23, 2004 | 02:52 PM
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Originally Posted by see5
Do you have 26 or 28# injectors? If your tune achieved desired A/F ratios you are probably ok. With 26#ers you are probably in a high duty cycle area which is not the best. >90% is undesirable.

I assume that I have the 26# injectors since it is a '99. I was advised that the injectors should be o.k. with my mods and that changing them will not provide any extra oomph. If it is not supercharged, run with nitrous or a big cube motor then it is not necessary to change. We'll see.
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